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[Music]

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nasa's james webb space telescope

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launched just eight days ago

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right now we are streaming the final

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stages of the sunshield unfolding from

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the mission control room in baltimore

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maryland this is live coverage of a

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real-time space flight operation as

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controllers prepare the james webb space

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on the morning of december 25th a

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massive rocket called an ariane 5 lifted

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off from a state-of-the-art facility

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located in french guiana

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on board the james webb space telescope

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bound for a point in space a million

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miles away

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the process of preparing web for actual

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operations is called commissioning and

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the majority of that work is taking

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place here

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at the space telescope science institute

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in baltimore

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what you're looking at now is some

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incredible footage actually live taken

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live from the uh the james webb space

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telescope during launch and here we now

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see uh the mission operations center in

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it works

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and the better status between so

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i'm your host michelle thawler today and

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um this is really a momentous and

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historic event that you're looking at uh

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we are actually going to be with you

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live as we finish the major unfolding of

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the james webb space telescope sunshield

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this is something that has never been

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done in space before this is a

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technology that's never been used in

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space before i am really really excited

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to uh to be here and i want to give you

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a little bit of a sense of what's going

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on here

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a lot of things have been changing very

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rapidly

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we have a beautiful set at goddard space

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flight center uh where we are going to

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give you a very well rehearsed live

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broadcast

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because of the resurgence of covid we

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are no longer operating on that set and

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so those of us who can be at home are at

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home for the protection and the health

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of our colleagues and the people that

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absolutely need to be at the mission

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operations center in baltimore are there

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that means that i'm doing this from my

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home and that you're looking at

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something that is also unrehearsed this

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is a live event that we haven't really

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had a chance to uh to put together in a

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very polished way so as we do this you

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know we're all in this together i ask

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for your patience if things are a little

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rough around the edges of this broadcast

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that's the reason why uh we also

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received a foot of snow yesterday here

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in maryland where i live so i'm having

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sporadic power outages hopefully we

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won't be worrying about that but the the

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reason we've decided to do this live is

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that this is something that everybody

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around the world is is with us on the

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james webb space telescope is a true

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milestone for humanity

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and it is a really historic momentous

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day and we want you with us on this day

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so later in the broadcast we'll be

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taking questions from social media but

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to begin with i want to begin

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discussions with somebody that's been

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with the web mission for quite a long

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time and uh this is uh keith parrish uh

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keith parish let's see your uh your

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title now is the uh uh the the the the

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the spacecraft deployment engineer is

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that correct

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no no i'm the commissioning manager for

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for web commissioning manager thank you

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thank you very much the commissioning

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manager

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yeah that's right

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good morning

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uh well we're great right now i'm just

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uh i'm up i'm upstairs from that

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operation center that you see there so

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i'm one floor up from uh from the

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operations engineers right now

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right

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well let's start about you know the

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people that are joining us perhaps some

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of the people that didn't see the actual

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live broadcast of the launch that we did

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um let's talk about what's happened

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in the eight days since the launch so so

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what's happened and what's going on

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right now

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yeah so we had an absolutely beautiful

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launch on christmas morning i think it

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was the best christmas gift under the

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tree for a lot of people including our

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operations team and all the folks that

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have been working on this for so many

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years

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you know right off the bat we got a

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beautiful launch from arion put us right

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where we wanted to be as far as our

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velocity uh that evening on christmas

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evening we actually did our first

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mid-course correction burn and that was

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uh

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the almost the minimal amount of fuel

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that we needed to do that so uh and that

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that burn didn't happen by accident that

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was years in planning so just you know

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big shout out to our flight dynamics

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team and our delta v team and our

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propulsion and all of our teams so they

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they pulled that off flawlessly at

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exactly 12 and a half hours after launch

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uh then the next day we did some more uh

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turn-on of activities we got our antenna

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deployed uh eventually we got into uh

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getting our uh

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another burn a couple days later we did

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a small mid-course correction and then

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the next day we actually started doing

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our deployment so we deployed our

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forward uh and aft ups shells uh we

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deployed that big uh tower that gets the

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telescope up away from uh from the

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spacecraft uh and then i got the and

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then it just then it started then the

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pace started really really picking up

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and i had to it's been such a blur i had

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to write down just to make sure i didn't

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forget it all uh

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on about five days in we actually did

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our roll-up covers and those roll-up

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covers come in three stages uh we

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release a bunch of

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pins that hold those covers to the shell

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uh we released those they rolled up into

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two out of the three stages and we held

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them there

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and then uh on new year's eve uh we did

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what what i would think is our most

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exciting deployment and that's where we

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actually deployed our plus and minus

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booms

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of the real thing uh when we tested this

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on the ground for the last time so uh

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everything you're seeing in that footage

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uh is uh what we're doing right now but

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those plus and minus j2 booms came out

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on new year's eve uh we had we had a

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great new year's eve here in the in the

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in the mission operations center and the

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big thing about those booms coming out

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is that's when we plunged our telescope

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in the darkness uh for the first time

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our telescope is has no more sun on it

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and uh it's been cooling as it should

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ever since uh and then over the last

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couple days we took a little bit of a

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break over the weekend as you've heard

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uh in in the news there which was much

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needed for our team because they were

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going uh like gangbusters for that week

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uh and then and then yesterday morning

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we started what we're doing right now

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which is actually pulling in uh the

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corners and actually tensioning up the

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five layers of the sun shield so it's

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been an absolutely

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you know just a whirlwind and a

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fantastic week since since we've

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launched

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that's incredible you know it's so many

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congratulations and i know that uh one

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of the things that's been sort of

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popular on the internet is uh we have a

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website actually where you can track

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where web is now can you give us a

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little bit of updates so

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where exactly is web now

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i haven't checked that today the last

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time i saw it it was roughly about 500

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maybe 600 000 miles uh

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from from earth uh we're on our way to

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l2 uh one thing you'll notice on that

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website that i think we get a lot of

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questions on is it looks like we're

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slowing down and uh that's exactly right

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we should be slowing down so uh we want

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to go out and sort of be uh we want to

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be pretty much

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absolutely stopped when we get to that

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roughly million miles away and that's

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when we'll sort of be in our orbit

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around l2 so our our velocity with

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respect to the earth is is actually is

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actually coming down you also see some

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temperatures on that page uh that kind

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of gives a little bit of a feel we have

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thousands of temperature monitors all

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around web we we try to pick some that

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give you a little bit of a flavor of

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what's happening on the hot side and

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what's happening on the cold side and so

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far everything is performing as as it

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should from a temperatures

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perspective

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i think some other things you'll see on

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our website is where we are in our

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deployments uh and you should be able to

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track that all on our website so you

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know huge shout out to our our our media

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team that does those websites and does

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everything you're doing today because uh

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we're we're a fast moving thing and you

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guys are keeping up with us so it's uh

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you know kudos to you guys

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yeah we were talking about some of the

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challenges with this yeah the resurgence

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of covent has created

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what's going on at the mock and with

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your team to to make sure people are are

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safe you know what to tell tell me a bit

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about how you're dealing with the

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challenges right now

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yeah so um you know like the rest of the

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rest of our nation right now we're we're

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dealing with the surge right right when

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we're doing all this so uh uh we've

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known this uh we've been in our

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rehearsal stage for a couple years now

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since the reality of covet hit the

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entire world

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so we've started planning for dealing

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with kova bent you know a couple years

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back

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and so we were ready for it

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we weren't quite

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anticipating a surge like we just got uh

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on right on top of our first week of of

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the of the mission uh but uh we have

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protocols in place to keep everybody

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safe uh we do testing uh we try to keep

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our numbers down we do what we can uh

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practically and then uh

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you know we do have cases uh and and and

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our our team handles that and and and we

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keep those they keep those folks uh

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isolated one of the one of the things

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that has been a challenge is people who

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you know worked a long time on this and

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and they and and we had to isolate them

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now fortunately in this day and age we

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can uh get them hooked up to our

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operations loop and they can uh help us

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remotely from wherever they are so uh um

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we are handling it very well uh but uh

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it has been it has you know it's just

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another challenge that uh we just roll

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with it we just roll with it

276
00:11:25,110 --> 00:11:22,959
well let's talk a bit about what's going

277
00:11:26,870 --> 00:11:25,120
on today because as we mentioned there's

278
00:11:29,350 --> 00:11:26,880
something something quite significant

279
00:11:30,870 --> 00:11:29,360
happening so so take us through you know

280
00:11:33,430 --> 00:11:30,880
what's going to happen in the next say

281
00:11:36,069 --> 00:11:33,440
hour or so and and really what that

282
00:11:38,150 --> 00:11:36,079
means what the significance of that is

283
00:11:39,910 --> 00:11:38,160
yeah so yesterday so we you know we put

284
00:11:41,590 --> 00:11:39,920
out all these five layers of the sun

285
00:11:42,949 --> 00:11:41,600
shield and they're just kind of you know

286
00:11:44,230 --> 00:11:42,959
they're not really tight they're kind of

287
00:11:47,829 --> 00:11:44,240
and then actually what we've been doing

288
00:11:50,389 --> 00:11:47,839
since yesterday is our sun shield team

289
00:11:53,110 --> 00:11:50,399
uh again right downstairs right now uh

290
00:11:55,430 --> 00:11:53,120
they're actually reeling in uh cables

291
00:11:57,430 --> 00:11:55,440
from each of the six pull points around

292
00:12:00,310 --> 00:11:57,440
the periphery of the sun shield so each

293
00:12:02,949 --> 00:12:00,320
one of those corners actually has three

294
00:12:04,710 --> 00:12:02,959
cables uh related to it

295
00:12:06,870 --> 00:12:04,720
one cable actually pulls it really

296
00:12:09,269 --> 00:12:06,880
really tight and then two cables on that

297
00:12:11,269 --> 00:12:09,279
corner actually are lightly pulled and

298
00:12:13,590 --> 00:12:11,279
they're connected to the periphery all

299
00:12:15,110 --> 00:12:13,600
around the perimeter of the sun shield

300
00:12:17,590 --> 00:12:15,120
and that's what gives us

301
00:12:20,550 --> 00:12:17,600
a very very precise control over the

302
00:12:21,829 --> 00:12:20,560
shape of the edge uh in addition to

303
00:12:23,750 --> 00:12:21,839
spreading the layers we want to make

304
00:12:25,910 --> 00:12:23,760
sure that the the layers are actually

305
00:12:27,509 --> 00:12:25,920
positioned correctly around the edge so

306
00:12:29,910 --> 00:12:27,519
huge amount of engineering went into

307
00:12:31,670 --> 00:12:29,920
controlling those edges so again each

308
00:12:34,150 --> 00:12:31,680
layer has

309
00:12:36,069 --> 00:12:34,160
each corner has three cables and again

310
00:12:38,389 --> 00:12:36,079
we have six corners so you can start

311
00:12:40,150 --> 00:12:38,399
doing the math on those and all over

312
00:12:43,269 --> 00:12:40,160
we have 90 different cables that have

313
00:12:46,230 --> 00:12:43,279
been reeled in over the last day

314
00:12:48,470 --> 00:12:46,240
as we as we tension layer one

315
00:12:51,110 --> 00:12:48,480
we're reeling in 90 cables as we as we

316
00:12:52,870 --> 00:12:51,120
tension layer 2 we're down to 72 cables

317
00:12:55,590 --> 00:12:52,880
and today we're really only working with

318
00:12:57,430 --> 00:12:55,600
18 cables so we've gone from 90 cables

319
00:13:00,389 --> 00:12:57,440
and today we're working with uh you know

320
00:13:02,550 --> 00:13:00,399
36 cables for layer 4 right now

321
00:13:04,710 --> 00:13:02,560
when we start layer 5 in a little bit

322
00:13:07,590 --> 00:13:04,720
we'll be down to 18 cables and we have

323
00:13:10,710 --> 00:13:07,600
motors uh that actually reel all those

324
00:13:13,430 --> 00:13:10,720
cables in very precise uh you know very

325
00:13:17,110 --> 00:13:13,440
very well uh slowly done uh those those

326
00:13:18,470 --> 00:13:17,120
motors turn and then uh eventually uh

327
00:13:20,310 --> 00:13:18,480
we'll turn all those motors off and

328
00:13:21,829 --> 00:13:20,320
we'll be we'll be fully tensioned uh

329
00:13:24,069 --> 00:13:21,839
when we get into layer five here in a

330
00:13:25,590 --> 00:13:24,079
little bit you'll notice that we uh we

331
00:13:27,670 --> 00:13:25,600
actually go around the corners we

332
00:13:29,750 --> 00:13:27,680
tension each corner up separately so

333
00:13:32,710 --> 00:13:29,760
that's what's going on today and uh

334
00:13:35,030 --> 00:13:32,720
we'll finish up here shortly

335
00:13:36,150 --> 00:13:35,040
that's absolutely wonderful so uh you

336
00:13:37,509 --> 00:13:36,160
know just to kind of talk a bit about

337
00:13:39,910 --> 00:13:37,519
this heat shield uh give us a sense

338
00:13:40,949 --> 00:13:39,920
about how large this heat shield is and

339
00:13:42,710 --> 00:13:40,959
and what are the temperature

340
00:13:45,269 --> 00:13:42,720
differentials how cold is it on the cold

341
00:13:46,629 --> 00:13:45,279
side versus the warm side

342
00:13:48,230 --> 00:13:46,639
yeah so we you know we always throw

343
00:13:50,150 --> 00:13:48,240
around the tennis court analogy i guess

344
00:13:51,509 --> 00:13:50,160
if you play tennis you know exactly what

345
00:13:52,790 --> 00:13:51,519
we're talking about if you don't play

346
00:13:54,949 --> 00:13:52,800
tennis you're probably like well i think

347
00:13:56,389 --> 00:13:54,959
that's big i don't know uh roughly you

348
00:13:59,030 --> 00:13:56,399
know i'm gonna i'm gonna use feet here i

349
00:14:03,350 --> 00:13:59,040
know i know um but it's roughly 70 feet

350
00:14:05,030 --> 00:14:03,360
uh 70 feet long and uh and about 54 feet

351
00:14:07,750 --> 00:14:05,040
wide so you can see some dimensions

352
00:14:10,230 --> 00:14:07,760
there uh thank you for for providing

353
00:14:12,310 --> 00:14:10,240
that in the meters so uh yeah very very

354
00:14:14,710 --> 00:14:12,320
large it's one of the largest structures

355
00:14:17,030 --> 00:14:14,720
uh that that has flown that has been

356
00:14:20,069 --> 00:14:17,040
sort of robotically or automatically uh

357
00:14:22,310 --> 00:14:20,079
deployed so uh yeah quite large again

358
00:14:25,030 --> 00:14:22,320
all the edge control all the uh edge

359
00:14:27,829 --> 00:14:25,040
separation and again we're doing five of

360
00:14:29,590 --> 00:14:27,839
these we're not just doing one uh so you

361
00:14:31,910 --> 00:14:29,600
know again a huge shout out to our

362
00:14:34,310 --> 00:14:31,920
sunshield team uh they've been at this

363
00:14:36,150 --> 00:14:34,320
for many many years and and you cannot

364
00:14:39,590 --> 00:14:36,160
overstate what an engineering

365
00:14:42,710 --> 00:14:41,030
the thing that's so exciting about so

366
00:14:43,990 --> 00:14:42,720
many aspects of the web oh i see here

367
00:14:45,030 --> 00:14:44,000
we've got a graphic about this oh yeah

368
00:14:47,189 --> 00:14:45,040
yeah yeah

369
00:14:49,430 --> 00:14:47,199
yeah so yeah this is dramatic again we

370
00:14:51,829 --> 00:14:49,440
try to put this out on our website uh

371
00:14:54,310 --> 00:14:51,839
but roughly we we get about again in

372
00:14:57,430 --> 00:14:54,320
fahrenheit uh we get about 100 degree

373
00:14:59,509 --> 00:14:57,440
fahrenheit drop per layer uh overall we

374
00:15:01,590 --> 00:14:59,519
get about you know 600 degrees between

375
00:15:03,110 --> 00:15:01,600
the hot side and what i call our coldest

376
00:15:05,350 --> 00:15:03,120
temperature on the observatory which is

377
00:15:07,430 --> 00:15:05,360
our instrument detectors uh our

378
00:15:10,150 --> 00:15:07,440
instrument detectors are running right

379
00:15:11,829 --> 00:15:10,160
around minus 400 degrees so

380
00:15:14,949 --> 00:15:11,839
you could boil water probably on the

381
00:15:16,710 --> 00:15:14,959
front side of us uh and and and and on

382
00:15:21,030 --> 00:15:16,720
the back side of us you're you're almost

383
00:15:24,870 --> 00:15:22,949
so the you know the the huge size of

384
00:15:26,790 --> 00:15:24,880
this uh has to do with the just the

385
00:15:29,269 --> 00:15:26,800
general size of this observatory you

386
00:15:31,670 --> 00:15:29,279
know in total and of course this idea

387
00:15:33,509 --> 00:15:31,680
that it had to actually be folded up to

388
00:15:35,350 --> 00:15:33,519
actually launch inside the area and five

389
00:15:36,550 --> 00:15:35,360
rocket and i just want to take you back

390
00:15:37,670 --> 00:15:36,560
a little bit through that launch you

391
00:15:41,030 --> 00:15:37,680
know i know that this was something that

392
00:15:43,910 --> 00:15:41,040
was an incredible day for all of us uh

393
00:15:44,710 --> 00:15:43,920
i'm sorry i'm getting a perhaps getting

394
00:15:49,509 --> 00:15:44,720
yes

395
00:15:52,870 --> 00:15:50,870
i'm just getting instructions that we

396
00:15:54,949 --> 00:15:52,880
have a wonderful chance to talk with you

397
00:15:56,949 --> 00:15:54,959
another person that's had uh you know

398
00:16:00,230 --> 00:15:56,959
truly a historic day jim flynn from

399
00:16:02,069 --> 00:16:00,240
northrop grumman and so so um jim please

400
00:16:03,990 --> 00:16:02,079
introduce yourself to us and tell us a

401
00:16:06,550 --> 00:16:04,000
bit about how you're doing today

402
00:16:08,710 --> 00:16:06,560
uh yeah i'm jim i'm the uh original

403
00:16:10,550 --> 00:16:08,720
essential manager at northrop grumman

404
00:16:12,629 --> 00:16:10,560
working with in partnership with the

405
00:16:13,990 --> 00:16:12,639
with the nasa team i've been involved in

406
00:16:16,310 --> 00:16:14,000
the sunshield all the way from the

407
00:16:18,150 --> 00:16:16,320
original development concept development

408
00:16:19,110 --> 00:16:18,160
through the design all the build and

409
00:16:21,350 --> 00:16:19,120
tests

410
00:16:25,590 --> 00:16:21,360
uh and through this final great phase of

411
00:16:29,910 --> 00:16:27,509
so let's talk a bit about the sunshield

412
00:16:31,430 --> 00:16:29,920
in details i mean for one thing i mean

413
00:16:33,350 --> 00:16:31,440
what an incredible story for you that

414
00:16:34,949 --> 00:16:33,360
you've been working on this for so long

415
00:16:37,910 --> 00:16:34,959
tell us a bit about what the sun shield

416
00:16:39,430 --> 00:16:37,920
is is made of and and can i i also you

417
00:16:41,110 --> 00:16:39,440
know let's start with the technical i'd

418
00:16:42,710 --> 00:16:41,120
also like to end you know ask you some

419
00:16:44,150 --> 00:16:42,720
personal questions about some of the

420
00:16:45,829 --> 00:16:44,160
challenges you faced some of the things

421
00:16:48,389 --> 00:16:45,839
you had to overcome but let's describe

422
00:16:50,389 --> 00:16:48,399
this sun shield so to begin with

423
00:16:52,790 --> 00:16:50,399
what is it made of

424
00:16:56,069 --> 00:16:52,800
so um the the layers are made out of a

425
00:16:57,910 --> 00:16:56,079
capped on e was made by dupont uh coated

426
00:16:59,910 --> 00:16:57,920
to get the correct optical properties

427
00:17:00,710 --> 00:16:59,920
for thermal performance

428
00:17:03,110 --> 00:17:00,720
um

429
00:17:05,429 --> 00:17:03,120
the bottom layer is is two millisticks

430
00:17:07,750 --> 00:17:05,439
that's .002 inches thick and the other

431
00:17:09,829 --> 00:17:07,760
four layers are one one mil thick very

432
00:17:11,350 --> 00:17:09,839
very thin material but very very strong

433
00:17:13,909 --> 00:17:11,360
when you you're pulling on it so it's

434
00:17:15,510 --> 00:17:13,919
very very robust uh you know in terms of

435
00:17:17,829 --> 00:17:15,520
the handling and the deployment you have

436
00:17:20,230 --> 00:17:17,839
to be careful not to you know tear it or

437
00:17:22,230 --> 00:17:20,240
puncture it but it's a very robust

438
00:17:24,949 --> 00:17:22,240
material um so

439
00:17:27,590 --> 00:17:24,959
basically uh you know we if we make big

440
00:17:29,510 --> 00:17:27,600
long rolls of this material and then at

441
00:17:31,350 --> 00:17:29,520
our vendor that made the membranes for

442
00:17:34,789 --> 00:17:31,360
us at nexhall in huntsville there's a

443
00:17:37,590 --> 00:17:34,799
very detailed process where we design

444
00:17:39,430 --> 00:17:37,600
build scene the gores together and build

445
00:17:41,270 --> 00:17:39,440
the assembly that goes along with the

446
00:17:43,909 --> 00:17:41,280
big deployable structure system that you

447
00:17:47,029 --> 00:17:45,190
one of the things that i found really

448
00:17:48,789 --> 00:17:47,039
fascinating was how many of these

449
00:17:51,029 --> 00:17:48,799
actuators these these non-explosive

450
00:17:52,950 --> 00:17:51,039
actuators have to have to work to get

451
00:17:54,789 --> 00:17:52,960
this thing to unfold could you describe

452
00:17:57,590 --> 00:17:54,799
a bit you know what what these actuators

453
00:17:59,990 --> 00:17:57,600
are and what has to happen

454
00:18:01,990 --> 00:18:00,000
so um the majority of the actuators are

455
00:18:03,350 --> 00:18:02,000
really holding this the folded essential

456
00:18:05,110 --> 00:18:03,360
down to the structure we need to make

457
00:18:06,950 --> 00:18:05,120
sure that it's in a nice repeatable

458
00:18:08,870 --> 00:18:06,960
fashion from all the ground testing

459
00:18:10,789 --> 00:18:08,880
keeping it all you know in a controlled

460
00:18:12,390 --> 00:18:10,799
fashion and then releasing it very

461
00:18:14,549 --> 00:18:12,400
sequentially so that we have a very

462
00:18:15,750 --> 00:18:14,559
controlled deployment these actuators

463
00:18:17,909 --> 00:18:15,760
basically hold that down and

464
00:18:19,669 --> 00:18:17,919
electrically actuate and release the

465
00:18:22,070 --> 00:18:19,679
system you know in a very controlled

466
00:18:24,390 --> 00:18:22,080
fashion that we test on the ground and

467
00:18:27,270 --> 00:18:24,400
we've we've shown multiple times is

468
00:18:30,310 --> 00:18:28,870
one of the questions i had of course is

469
00:18:31,830 --> 00:18:30,320
that when you're testing on the ground

470
00:18:33,590 --> 00:18:31,840
you have to deal with the effect of

471
00:18:35,750 --> 00:18:33,600
gravity during your test and you know

472
00:18:38,150 --> 00:18:35,760
now where web is you know up up you know

473
00:18:39,990 --> 00:18:38,160
in space on its way to l2 it's different

474
00:18:41,669 --> 00:18:40,000
i mean how how do you simulate that in

475
00:18:43,510 --> 00:18:41,679
your tests you know the the lack of

476
00:18:45,029 --> 00:18:43,520
gravity

477
00:18:46,870 --> 00:18:45,039
yeah so we had to kind of break the test

478
00:18:48,789 --> 00:18:46,880
program into pieces and at the big

479
00:18:51,430 --> 00:18:48,799
assembly level you really just can't do

480
00:18:52,950 --> 00:18:51,440
that so we made some system articles we

481
00:18:54,710 --> 00:18:52,960
would hang them almost in a shower

482
00:18:56,710 --> 00:18:54,720
curtain fashion to play them out

483
00:18:59,350 --> 00:18:56,720
offloaded like you would see in zero

484
00:19:01,029 --> 00:18:59,360
gravity so it's really a building up of

485
00:19:03,510 --> 00:19:01,039
a lot of different test articles in

486
00:19:05,909 --> 00:19:03,520
different orientations to show how it

487
00:19:07,909 --> 00:19:05,919
would perform in a zero g environment so

488
00:19:09,669 --> 00:19:07,919
you have to do it kind of in pieces

489
00:19:12,310 --> 00:19:09,679
rather than all at once with the final

490
00:19:15,750 --> 00:19:14,150
and what were some of the the major

491
00:19:16,710 --> 00:19:15,760
engineering challenges i mean can you

492
00:19:18,150 --> 00:19:16,720
you know

493
00:19:19,750 --> 00:19:18,160
over your many years working on the sun

494
00:19:21,190 --> 00:19:19,760
shield you know what were some of the

495
00:19:22,789 --> 00:19:21,200
stories of okay

496
00:19:24,549 --> 00:19:22,799
at first we didn't know how to do this

497
00:19:25,909 --> 00:19:24,559
and and then we figured it out but what

498
00:19:27,750 --> 00:19:25,919
were some of the big things that stand

499
00:19:29,750 --> 00:19:27,760
out in your memory

500
00:19:31,510 --> 00:19:29,760
yeah i mean the you know originally it's

501
00:19:33,430 --> 00:19:31,520
just it's you know we had an idea what

502
00:19:35,350 --> 00:19:33,440
this needed to look like you know in its

503
00:19:38,390 --> 00:19:35,360
deployed state but it was really how do

504
00:19:40,789 --> 00:19:38,400
we take these five very thin membranes

505
00:19:42,950 --> 00:19:40,799
fold them up and get them to fit within

506
00:19:45,029 --> 00:19:42,960
the payload fairing of the the launch

507
00:19:47,029 --> 00:19:45,039
vehicle and then be able to deploy it on

508
00:19:48,870 --> 00:19:47,039
orbit very reliably

509
00:19:50,870 --> 00:19:48,880
and uh you know with a lot of confidence

510
00:19:53,110 --> 00:19:50,880
so i think that's probably you know in

511
00:19:55,270 --> 00:19:53,120
the big picture just the ability to take

512
00:19:57,190 --> 00:19:55,280
these you know five thin layers fold

513
00:19:58,710 --> 00:19:57,200
them up and then make sure that we know

514
00:20:00,150 --> 00:19:58,720
how we're going to deploy them to get to

515
00:20:02,149 --> 00:20:00,160
that final shape that's probably the

516
00:20:07,750 --> 00:20:02,159
biggest challenge that we had you know

517
00:20:11,110 --> 00:20:09,590
i know that you know whenever we've been

518
00:20:12,630 --> 00:20:11,120
uh talking about you they've been saying

519
00:20:14,070 --> 00:20:12,640
you know you've got to get jim on this

520
00:20:15,669 --> 00:20:14,080
because he's the one that they they feel

521
00:20:17,669 --> 00:20:15,679
was sort of the lead on this i mean the

522
00:20:19,190 --> 00:20:17,679
person that has been on that so long how

523
00:20:20,549 --> 00:20:19,200
long how long have you been on this

524
00:20:21,590 --> 00:20:20,559
project when did you start working on

525
00:20:24,470 --> 00:20:21,600
web

526
00:20:26,710 --> 00:20:24,480
uh it seems like uh my whole life now

527
00:20:32,470 --> 00:20:26,720
i think uh probably like uh you know

528
00:20:36,310 --> 00:20:34,950
so uh yeah so since the very beginning

529
00:20:38,630 --> 00:20:36,320
since we were trying to figure out what

530
00:20:40,870 --> 00:20:38,640
the concepts were building maturing and

531
00:20:43,510 --> 00:20:40,880
iterating along the way and slowly

532
00:20:45,430 --> 00:20:43,520
improving the product and reducing the

533
00:20:47,590 --> 00:20:45,440
complexity and then getting a very

534
00:20:50,549 --> 00:20:47,600
reliable uh system at the very at the

535
00:20:53,029 --> 00:20:51,830
keith is there anything you'd like to

536
00:20:54,630 --> 00:20:53,039
add to the story i think you've been

537
00:20:56,789 --> 00:20:54,640
working with jim for quite a while i

538
00:20:59,270 --> 00:20:56,799
mean obviously jim is understating the

539
00:21:01,110 --> 00:20:59,280
challenges because he has overcome many

540
00:21:02,870 --> 00:21:01,120
along the way so uh you know the only

541
00:21:05,190 --> 00:21:02,880
thing i would say that uh people may not

542
00:21:06,149 --> 00:21:05,200
appreciate is uh the rocket launch

543
00:21:09,190 --> 00:21:06,159
itself

544
00:21:11,430 --> 00:21:09,200
uh and and and just getting the air out

545
00:21:13,510 --> 00:21:11,440
of all these layers so i you know i'm

546
00:21:15,270 --> 00:21:13,520
sure jim would like to to add a little

547
00:21:17,029 --> 00:21:15,280
bit of detail there on

548
00:21:19,430 --> 00:21:17,039
how that that was probably one of the

549
00:21:21,350 --> 00:21:19,440
biggest challenges

550
00:21:23,029 --> 00:21:21,360
yeah when you take the the five layers

551
00:21:24,950 --> 00:21:23,039
and then you have to fold them and fold

552
00:21:26,789 --> 00:21:24,960
them again you know you have to be

553
00:21:28,789 --> 00:21:26,799
careful about how that air is trapped in

554
00:21:30,870 --> 00:21:28,799
between the layers and how you can get

555
00:21:32,149 --> 00:21:30,880
it out in a controlled fashion and that

556
00:21:33,909 --> 00:21:32,159
was definitely one of the biggest

557
00:21:35,830 --> 00:21:33,919
challenges understanding what that

558
00:21:38,230 --> 00:21:35,840
environment was in the rocket how

559
00:21:40,390 --> 00:21:38,240
quickly the air needs to evacuate the

560
00:21:42,070 --> 00:21:40,400
loads from basically this this billowing

561
00:21:44,230 --> 00:21:42,080
inside the fairing

562
00:21:46,950 --> 00:21:44,240
we ran a lot of tests we we built uh

563
00:21:48,789 --> 00:21:46,960
full-scale mock-ups in uh in chambers

564
00:21:50,789 --> 00:21:48,799
that depressurized really quickly to

565
00:21:53,430 --> 00:21:50,799
verify the concepts

566
00:21:55,750 --> 00:21:53,440
we had to um you know design the system

567
00:21:57,510 --> 00:21:55,760
basically so that it was controlled

568
00:21:59,430 --> 00:21:57,520
through that depressurization

569
00:22:01,510 --> 00:21:59,440
environment and iterate you know several

570
00:22:03,350 --> 00:22:01,520
times in terms of making sure that that

571
00:22:04,870 --> 00:22:03,360
was a robust solution so it's definitely

572
00:22:06,789 --> 00:22:04,880
one of the challenges

573
00:22:09,029 --> 00:22:06,799
not just having it folded up and

574
00:22:11,590 --> 00:22:09,039
repeatably getting it on orbit but but

575
00:22:13,270 --> 00:22:11,600
being able to vent that air that was

576
00:22:16,390 --> 00:22:13,280
trapped in between the layers in a

577
00:22:18,470 --> 00:22:16,400
controlled reliable fashion so that the

578
00:22:20,630 --> 00:22:18,480
system basically could withstand those

579
00:22:22,549 --> 00:22:20,640
depressurization loads and deploy on

580
00:22:24,310 --> 00:22:22,559
orbit

581
00:22:25,590 --> 00:22:24,320
yeah what we're looking at here the the

582
00:22:26,390 --> 00:22:25,600
image that they have for us it was that

583
00:22:28,310 --> 00:22:26,400
spectacular

584
00:22:30,630 --> 00:22:28,320
uh you know real image of the

585
00:22:32,149 --> 00:22:30,640
observatory pulling away from the rocket

586
00:22:34,070 --> 00:22:32,159
and uh this was one of these things that

587
00:22:35,990 --> 00:22:34,080
i could hardly believe was was real when

588
00:22:37,590 --> 00:22:36,000
it was happening it was an absolutely

589
00:22:41,669 --> 00:22:37,600
gorgeous shot

590
00:22:44,310 --> 00:22:43,029
oh sorry i'm just hearing an instruction

591
00:22:46,230 --> 00:22:44,320
from the mock i was wondering if that

592
00:22:48,870 --> 00:22:46,240
was

593
00:22:51,029 --> 00:22:48,880
right yes yes so they finished the layer

594
00:22:53,190 --> 00:22:51,039
four forward the tensioning they'll move

595
00:22:55,029 --> 00:22:53,200
on to the aft and layer four is almost

596
00:22:58,149 --> 00:22:55,039
complete we'll be complete after the

597
00:23:01,029 --> 00:22:59,669
just just amazing

598
00:23:02,549 --> 00:23:01,039
um one of the questions we've been

599
00:23:04,149 --> 00:23:02,559
getting from social media is that you

600
00:23:06,070 --> 00:23:04,159
know we we had that image of the

601
00:23:06,830 --> 00:23:06,080
observatory pulling away

602
00:23:08,549 --> 00:23:06,840
at

603
00:23:12,070 --> 00:23:08,559
622.01

604
00:23:13,830 --> 00:23:12,080
ready to go to do you operate for intent

605
00:23:18,950 --> 00:23:13,840
the command line looks good you're good

606
00:23:22,549 --> 00:23:20,870
okay so i guess i've heard i've heard

607
00:23:24,390 --> 00:23:22,559
that jim needs to go to the console that

608
00:23:26,549 --> 00:23:24,400
uh that that where we're coming up on

609
00:23:29,990 --> 00:23:26,559
the very end of this so jim thank you so

610
00:23:31,590 --> 00:23:30,000
much for for joining us and uh uh

611
00:23:33,590 --> 00:23:31,600
congratulations on everything and best

612
00:23:35,110 --> 00:23:33,600
of luck for the rest of today

613
00:23:37,029 --> 00:23:35,120
yeah i just wanted to say just wanted to

614
00:23:39,110 --> 00:23:37,039
congratulate the entire team it's just

615
00:23:41,830 --> 00:23:39,120
been a hugely talented team from

616
00:23:43,510 --> 00:23:41,840
beginning to end on the north nasa side

617
00:23:46,149 --> 00:23:43,520
you know a lot of you know brilliant

618
00:23:47,909 --> 00:23:46,159
people working a lot of hours and really

619
00:23:49,990 --> 00:23:47,919
a lot of dedication to get us here to

620
00:23:51,510 --> 00:23:50,000
this point and there's a lot of people

621
00:23:53,750 --> 00:23:51,520
out there that really deserve a lot of

622
00:23:57,350 --> 00:23:53,760
credit hey i can confirm kudos for the

623
00:24:01,710 --> 00:23:59,669
well thank you so much for joining us

624
00:24:03,430 --> 00:24:01,720
all right thank you at

625
00:24:05,669 --> 00:24:03,440
622.019

626
00:24:07,190 --> 00:24:05,679
we are ready to um

627
00:24:08,630 --> 00:24:07,200
execute

628
00:24:11,590 --> 00:24:08,640
that

629
00:24:13,590 --> 00:24:11,600
clock looks good you're going to execute

630
00:24:14,950 --> 00:24:13,600
yeah so keith can you give us an idea

631
00:24:17,110 --> 00:24:14,960
we're hearing these instructions coming

632
00:24:18,950 --> 00:24:17,120
over right now what's what's happening

633
00:24:20,630 --> 00:24:18,960
at this very moment

634
00:24:22,390 --> 00:24:20,640
yeah so what you're here you're hearing

635
00:24:25,750 --> 00:24:22,400
you're hearing the voice of our dev ops

636
00:24:27,830 --> 00:24:25,760
lead uh nancy um and uh she's awesome

637
00:24:29,590 --> 00:24:27,840
and she is coordinating between our

638
00:24:32,070 --> 00:24:29,600
flight operations team which is actually

639
00:24:34,789 --> 00:24:32,080
sending commands up to the spacecraft

640
00:24:36,149 --> 00:24:34,799
and uh she's sort of the liaison between

641
00:24:39,029 --> 00:24:36,159
that group of folks and actually our

642
00:24:42,710 --> 00:24:39,039
deployment engineers and i see you are

643
00:24:46,230 --> 00:24:44,870
and what she did there she just told

644
00:24:48,870 --> 00:24:46,240
them to send the command to start

645
00:24:50,870 --> 00:24:48,880
running the motor on the aft uh aft

646
00:24:52,630 --> 00:24:50,880
tensioning mechanism and uh if you look

647
00:24:54,230 --> 00:24:52,640
at the obt right there if you can see

648
00:24:56,870 --> 00:24:54,240
you'll see three layers

649
00:24:58,789 --> 00:24:56,880
uh and um

650
00:25:00,950 --> 00:24:58,799
you stop

651
00:25:03,909 --> 00:25:00,960
roger you'll see uh you'll see the

652
00:25:06,230 --> 00:25:03,919
fourth layer uh rise here pretty soon

653
00:25:08,310 --> 00:25:06,240
and the meter status for the f pair is

654
00:25:10,230 --> 00:25:08,320
moving

655
00:25:11,909 --> 00:25:10,240
and it's worth mentioning you you used

656
00:25:13,590 --> 00:25:11,919
an acronym but this is actually a

657
00:25:14,950 --> 00:25:13,600
real-time animation that although we

658
00:25:16,789 --> 00:25:14,960
can't see what's going on with the

659
00:25:18,470 --> 00:25:16,799
observatory this is actually showing you

660
00:25:19,430 --> 00:25:18,480
what configuration it's in at the moment

661
00:25:21,590 --> 00:25:19,440
it's crazy

662
00:25:23,190 --> 00:25:21,600
based on that data it brings up yeah and

663
00:25:25,029 --> 00:25:23,200
that brings up a good point i know folks

664
00:25:26,870 --> 00:25:25,039
have been interested in you know why

665
00:25:28,549 --> 00:25:26,880
don't we have cameras

666
00:25:30,950 --> 00:25:28,559
uh you know nobody would love to see

667
00:25:34,070 --> 00:25:30,960
webb doing its thing right now than than

668
00:25:36,310 --> 00:25:34,080
us um so it's uh you know and and you

669
00:25:39,110 --> 00:25:36,320
know one of the things we we we really

670
00:25:42,230 --> 00:25:39,120
did want to put cameras on web uh

671
00:25:44,230 --> 00:25:42,240
however uh web changes shape a lot you

672
00:25:45,590 --> 00:25:44,240
can tell over over its deployment it's

673
00:25:47,830 --> 00:25:45,600
going through a multiple different

674
00:25:49,990 --> 00:25:47,840
configurations so we just didn't need

675
00:25:52,789 --> 00:25:50,000
one camera we would need multiple

676
00:25:54,549 --> 00:25:52,799
cameras in multiple locations uh the

677
00:25:55,909 --> 00:25:54,559
other thing about web is it's very very

678
00:25:57,990 --> 00:25:55,919
shiny

679
00:26:00,310 --> 00:25:58,000
on one side and it's incredibly dark on

680
00:26:02,630 --> 00:26:00,320
the other side by design and so we would

681
00:26:04,310 --> 00:26:02,640
have to take artificial lighting

682
00:26:07,990 --> 00:26:04,320
ultimately

683
00:26:09,909 --> 00:26:08,000
engineering

684
00:26:11,430 --> 00:26:09,919
usefulness of those cameras just wasn't

685
00:26:13,110 --> 00:26:11,440
there unless it got really really

686
00:26:14,710 --> 00:26:13,120
complex fast

687
00:26:16,630 --> 00:26:14,720
the other thing is our cold side is

688
00:26:18,070 --> 00:26:16,640
really cold so any camera on that side

689
00:26:20,870 --> 00:26:18,080
would have to be designed almost from

690
00:26:23,110 --> 00:26:20,880
the ground up to survive on that side

691
00:26:25,750 --> 00:26:23,120
it would fall apart if not and we'd have

692
00:26:27,510 --> 00:26:25,760
debris floating around possibly it would

693
00:26:29,430 --> 00:26:27,520
it would uh you know unless we started

694
00:26:30,710 --> 00:26:29,440
from scratch so and then the other thing

695
00:26:32,390 --> 00:26:30,720
we're trying to keep our heat loads on

696
00:26:35,590 --> 00:26:32,400
that side very very low so all those

697
00:26:38,310 --> 00:26:35,600
things kind of combine together uh to uh

698
00:26:40,230 --> 00:26:38,320
to to say we we really want these uh but

699
00:26:41,990 --> 00:26:40,240
but we would we just can't we just can't

700
00:26:44,230 --> 00:26:42,000
do it so uh

701
00:26:45,830 --> 00:26:44,240
maybe from scratch from day one if we

702
00:26:49,590 --> 00:26:45,840
started over again we could implement

703
00:26:51,430 --> 00:26:49,600
them in so all that being said um we we

704
00:26:52,950 --> 00:26:51,440
take all of our telemetry that's coming

705
00:26:55,430 --> 00:26:52,960
down from web that's actually the

706
00:26:57,510 --> 00:26:55,440
numbers that we see on our screens and

707
00:26:59,350 --> 00:26:57,520
all the different information web is

708
00:27:01,110 --> 00:26:59,360
incredibly instrumented it's telling us

709
00:27:02,630 --> 00:27:01,120
everything about itself at all times

710
00:27:03,990 --> 00:27:02,640
it's position where all these

711
00:27:05,430 --> 00:27:04,000
deployments are

712
00:27:07,590 --> 00:27:05,440
but we take all that data and we

713
00:27:10,230 --> 00:27:07,600
synthesize it into a visual which we're

714
00:27:11,990 --> 00:27:10,240
seeing on the screen right now and uh so

715
00:27:13,909 --> 00:27:12,000
it we don't use it from an engineering

716
00:27:15,269 --> 00:27:13,919
perspective as far as

717
00:27:17,269 --> 00:27:15,279
this is what's really happening the

718
00:27:19,909 --> 00:27:17,279
numbers tell us what's really happening

719
00:27:23,350 --> 00:27:19,919
uh but uh our incredible ovt our

720
00:27:28,950 --> 00:27:23,360
observatory uh visualization tool and

721
00:27:32,470 --> 00:27:30,950
they put a very cool tool together and

722
00:27:34,070 --> 00:27:32,480
uh this kind of gives us a little

723
00:27:35,110 --> 00:27:34,080
connection to web even though we can't

724
00:27:37,110 --> 00:27:35,120
see it

725
00:27:38,789 --> 00:27:37,120
this gives us that visual and spatial

726
00:27:41,110 --> 00:27:38,799
recognition of what's going on and it's

727
00:27:42,870 --> 00:27:41,120
been very useful to our engineers

728
00:27:45,990 --> 00:27:42,880
as we work through different uh you know

729
00:27:47,110 --> 00:27:46,000
different things that have been going on

730
00:27:49,830 --> 00:27:47,120
wonderful

731
00:27:51,190 --> 00:27:49,840
so um keith do you have any idea

732
00:27:52,870 --> 00:27:51,200
are we on sort of that and so a

733
00:27:56,470 --> 00:27:52,880
countdown about how much time it'll be

734
00:27:58,870 --> 00:27:56,480
until we know that this is completed

735
00:28:01,830 --> 00:27:58,880
let's see we're uh you can i you should

736
00:28:05,350 --> 00:28:01,840
be doing layer four on the aft right now

737
00:28:10,549 --> 00:28:07,669
that's quite a long motor move uh for

738
00:28:14,230 --> 00:28:12,630
and i'm just i always pull up that here

739
00:28:16,549 --> 00:28:14,240
i'm listening to a bunch of different

740
00:28:18,549 --> 00:28:16,559
operational loops uh but they have got

741
00:28:21,430 --> 00:28:18,559
that started so we we should see that

742
00:28:23,430 --> 00:28:21,440
that going right now

743
00:28:24,310 --> 00:28:23,440
and again right now

744
00:28:25,909 --> 00:28:24,320
okay

745
00:28:28,950 --> 00:28:25,919
go ahead and show

746
00:28:29,269 --> 00:28:28,960
oh no please please go ahead keith

747
00:28:30,950 --> 00:28:29,279
just no

748
00:28:32,549 --> 00:28:30,960
re you know just going to reiterate that

749
00:28:34,070 --> 00:28:32,559
we have two corners there you can see in

750
00:28:36,549 --> 00:28:34,080
that view of the ovt there's actually

751
00:28:38,950 --> 00:28:36,559
two corners uh so we actually have two

752
00:28:40,950 --> 00:28:38,960
sets of mechanisms winding uh two sets

753
00:28:42,389 --> 00:28:40,960
of cables for each of those uh corners

754
00:28:44,389 --> 00:28:42,399
right now

755
00:28:46,630 --> 00:28:44,399
um you can see up in the corner there i

756
00:28:48,389 --> 00:28:46,640
must uh maybe you can see in the corner

757
00:28:50,950 --> 00:28:48,399
you'll see uh some of that data that's

758
00:28:53,269 --> 00:28:50,960
coming down from web that's counting up

759
00:28:55,669 --> 00:28:53,279
uh those are our uh instrumentation that

760
00:28:57,750 --> 00:28:55,679
tells us our our position of our motors

761
00:29:02,870 --> 00:28:57,760
and how many uh you know how our motors

762
00:29:05,830 --> 00:29:04,310
i think that we have a few minutes here

763
00:29:08,149 --> 00:29:05,840
to maybe go back into some of the

764
00:29:10,310 --> 00:29:08,159
explanation as to why this heat shield

765
00:29:12,710 --> 00:29:10,320
is required you know the whole idea

766
00:29:14,310 --> 00:29:12,720
about infrared astronomy and why it's so

767
00:29:16,950 --> 00:29:14,320
imperative to keep this particular

768
00:29:18,310 --> 00:29:16,960
observatory so cold

769
00:29:20,149 --> 00:29:18,320
so um

770
00:29:22,950 --> 00:29:20,159
maybe i'll just start by you know a bit

771
00:29:24,470 --> 00:29:22,960
of background about the infrared and um

772
00:29:26,549 --> 00:29:24,480
infrared astronomy is something that

773
00:29:29,350 --> 00:29:26,559
i've been involved in uh since i was

774
00:29:30,710 --> 00:29:29,360
right out of my phd i i started working

775
00:29:32,549 --> 00:29:30,720
at the jet propulsion laboratory in

776
00:29:35,350 --> 00:29:32,559
caltech on the spitzer mission a long

777
00:29:37,110 --> 00:29:35,360
time ago um infrared radiation is

778
00:29:38,789 --> 00:29:37,120
something that we commonly think of as

779
00:29:41,269 --> 00:29:38,799
as heat radiation

780
00:29:44,710 --> 00:29:41,279
and uh you know infrared the uh the

781
00:29:47,590 --> 00:29:44,720
actual word infrared means beyond red so

782
00:29:49,590 --> 00:29:47,600
this is a color that our eyes don't see

783
00:29:52,070 --> 00:29:49,600
uh our eyes are only sensitive to a

784
00:29:54,630 --> 00:29:52,080
small range of all the colors of light

785
00:29:56,230 --> 00:29:54,640
or as we say electromagnetic radiation

786
00:29:59,110 --> 00:29:56,240
and uh infrared is what we commonly

787
00:30:00,870 --> 00:29:59,120
think of as as heat radiation and uh so

788
00:30:02,950 --> 00:30:00,880
that's uh that's something that we we

789
00:30:05,590 --> 00:30:02,960
need to keep the observatory very very

790
00:30:08,310 --> 00:30:05,600
cold in order to detect heat radiation

791
00:30:10,389 --> 00:30:08,320
from objects very very far away in space

792
00:30:12,230 --> 00:30:10,399
and in fact uh the science goals of web

793
00:30:14,710 --> 00:30:12,240
include detecting perhaps the farthest

794
00:30:16,389 --> 00:30:14,720
things we've ever discovered um one of

795
00:30:17,909 --> 00:30:16,399
the real advantages to infrared as you

796
00:30:19,909 --> 00:30:17,919
see here this is a hubble space

797
00:30:21,990 --> 00:30:19,919
telescope visible light image of the

798
00:30:24,470 --> 00:30:22,000
famous pillars of creation that's a

799
00:30:26,950 --> 00:30:24,480
giant gas cloud that's producing several

800
00:30:29,190 --> 00:30:26,960
stars inside it stars are being born and

801
00:30:31,350 --> 00:30:29,200
when you go to the infrared um hubble

802
00:30:33,750 --> 00:30:31,360
did have an instrument nick moss that

803
00:30:39,590 --> 00:30:33,760
did see a little bit into the infrared

804
00:30:42,710 --> 00:30:41,909
so the uh those those two images are

805
00:30:44,549 --> 00:30:42,720
both

806
00:30:46,470 --> 00:30:44,559
absolutely real it's just that the

807
00:30:49,110 --> 00:30:46,480
second one is an infrared light which is

808
00:30:51,029 --> 00:30:49,120
invisible radiation to your eyes uh

809
00:30:52,470 --> 00:30:51,039
infrared light has the ability to cut

810
00:30:54,549 --> 00:30:52,480
through dust

811
00:30:56,630 --> 00:30:54,559
and this is one of the the amazing

812
00:30:59,029 --> 00:30:56,640
properties uh just like you saw if you

813
00:31:02,070 --> 00:30:59,039
want to see stars and planets forming

814
00:31:03,110 --> 00:31:02,080
they do so inside giant clouds of dust

815
00:31:04,630 --> 00:31:03,120
and gas

816
00:31:06,950 --> 00:31:04,640
and normally the visible light is

817
00:31:08,470 --> 00:31:06,960
completely obscured by all of that dust

818
00:31:10,710 --> 00:31:08,480
uh there are other things like the very

819
00:31:13,430 --> 00:31:10,720
center of our galaxy uh the milky way

820
00:31:15,590 --> 00:31:13,440
galaxy which is a family of about a half

821
00:31:17,909 --> 00:31:15,600
a trillion stars that we belong to the

822
00:31:20,549 --> 00:31:17,919
center of the galaxy is on the order of

823
00:31:22,950 --> 00:31:20,559
about 30 000 light years away from us a

824
00:31:25,590 --> 00:31:22,960
light year being about 6 trillion miles

825
00:31:28,389 --> 00:31:25,600
the distance light travels in a year

826
00:31:30,149 --> 00:31:28,399
and that is also obscured by big clouds

827
00:31:32,389 --> 00:31:30,159
of dust we can't see into the center of

828
00:31:34,230 --> 00:31:32,399
our galaxy invisible light

829
00:31:35,750 --> 00:31:34,240
so there there are so many objects that

830
00:31:39,669 --> 00:31:35,760
infrared is going to be you know really

831
00:31:43,909 --> 00:31:41,669
we uh we we may also have some some

832
00:31:45,990 --> 00:31:43,919
roland's uh oh here we go yes uh here's

833
00:31:48,630 --> 00:31:46,000
a really lovely role in showing you that

834
00:31:50,470 --> 00:31:48,640
web and hubble uh hubble space telescope

835
00:31:51,830 --> 00:31:50,480
was designed mainly to see visible light

836
00:31:53,190 --> 00:31:51,840
the kind of light that our eye sees it

837
00:31:55,830 --> 00:31:53,200
did see a little bit into the

838
00:31:58,630 --> 00:31:55,840
ultraviolet and infrared uh web is

839
00:32:00,710 --> 00:31:58,640
optimized and designed to see infrared

840
00:32:03,110 --> 00:32:00,720
and amazingly that allows you to see

841
00:32:05,509 --> 00:32:03,120
farther away in the universe and that

842
00:32:08,310 --> 00:32:05,519
means farther back in time the farther

843
00:32:10,470 --> 00:32:08,320
away you look in space the longer light

844
00:32:12,310 --> 00:32:10,480
has taken to travel to you

845
00:32:14,549 --> 00:32:12,320
and there's an amazing property of our

846
00:32:16,789 --> 00:32:14,559
universe so the universe is expanding

847
00:32:19,110 --> 00:32:16,799
space itself is expanding

848
00:32:21,430 --> 00:32:19,120
and as that light from the very early

849
00:32:23,350 --> 00:32:21,440
universe travels through space the

850
00:32:24,870 --> 00:32:23,360
wavelength is actually stretched by the

851
00:32:26,950 --> 00:32:24,880
expansion of space

852
00:32:28,950 --> 00:32:26,960
so light that might have begun from

853
00:32:31,909 --> 00:32:28,960
starlight in the ultraviolet or visible

854
00:32:33,750 --> 00:32:31,919
light from the first generation of stars

855
00:32:36,149 --> 00:32:33,760
that wavelength of light has actually

856
00:32:38,230 --> 00:32:36,159
been stretched out into the infrared

857
00:32:40,230 --> 00:32:38,240
and so if you want to see galaxies that

858
00:32:42,310 --> 00:32:40,240
are very far away and very distant and

859
00:32:45,590 --> 00:32:42,320
here we actually see a graphic of how

860
00:32:47,350 --> 00:32:45,600
that works a galaxy uh is actually it

861
00:32:49,669 --> 00:32:47,360
seems to be receding from us in the

862
00:32:51,110 --> 00:32:49,679
expansion of space and that that light

863
00:32:53,269 --> 00:32:51,120
that would have started as visible or

864
00:32:55,590 --> 00:32:53,279
ultraviolet becomes infrared

865
00:32:57,190 --> 00:32:55,600
so one of the amazing science goals of

866
00:32:59,830 --> 00:32:57,200
webb is to be able to look back to a

867
00:33:02,070 --> 00:32:59,840
time probably only about 200 million

868
00:33:03,750 --> 00:33:02,080
years after the big bang and this is the

869
00:33:05,830 --> 00:33:03,760
era that we think the very first stars

870
00:33:07,990 --> 00:33:05,840
and galaxies were forming and so the

871
00:33:10,310 --> 00:33:08,000
amazing thing is the infrared light will

872
00:33:12,789 --> 00:33:10,320
allow us to actually see that far back

873
00:33:17,750 --> 00:33:12,799
looking at the origins of galaxies and

874
00:33:17,760 --> 00:33:21,110
all right and uh michelle

875
00:33:24,149 --> 00:33:22,389
i'm sorry i'm just saying you can start

876
00:33:27,190 --> 00:33:24,159
seeing if you see you start to see that

877
00:33:29,750 --> 00:33:27,200
layer uh starting to rise up uh layer

878
00:33:34,070 --> 00:33:29,760
four on that aft side so uh slowly

879
00:33:37,110 --> 00:33:35,590
this must be very exciting for you can

880
00:33:37,990 --> 00:33:37,120
you can you give us a sense about uh

881
00:33:39,590 --> 00:33:38,000
here

882
00:33:41,029 --> 00:33:39,600
right now

883
00:33:44,230 --> 00:33:41,039
but we like the grass to grow really

884
00:33:45,990 --> 00:33:44,240
really slow uh so yes this is uh

885
00:33:47,430 --> 00:33:46,000
this is exciting i mean yesterday we did

886
00:33:50,789 --> 00:33:47,440
not think we were going to get through

887
00:33:53,190 --> 00:33:50,799
the first three layers um but the team

888
00:33:55,350 --> 00:33:53,200
you know again the the entire team uh

889
00:33:57,430 --> 00:33:55,360
just executed everything flawlessly we

890
00:33:59,190 --> 00:33:57,440
were only planning to do one yesterday

891
00:34:01,830 --> 00:33:59,200
but that went so well they said hey can

892
00:34:03,269 --> 00:34:01,840
we just keep going uh and we almost had

893
00:34:05,110 --> 00:34:03,279
to hold him back a little bit you know

894
00:34:06,870 --> 00:34:05,120
as the day was getting long and uh you

895
00:34:08,629 --> 00:34:06,880
know we don't want uh we want to make

896
00:34:11,270 --> 00:34:08,639
sure they're well rested uh but they

897
00:34:12,790 --> 00:34:11,280
were eager to go and uh so uh

898
00:34:15,669 --> 00:34:12,800
they're all excited this morning getting

899
00:34:16,790 --> 00:34:15,679
these last two out

900
00:34:18,310 --> 00:34:16,800
this was one of the things that we were

901
00:34:19,669 --> 00:34:18,320
talking about about the live broadcast

902
00:34:21,349 --> 00:34:19,679
you know we we uh

903
00:34:23,109 --> 00:34:21,359
we've just been following exactly when

904
00:34:24,950 --> 00:34:23,119
this is happening of course you know the

905
00:34:26,790 --> 00:34:24,960
communications team does not dictate how

906
00:34:28,310 --> 00:34:26,800
the observatory is unfolded the

907
00:34:30,629 --> 00:34:28,320
engineers do it when the conditions are

908
00:34:32,790 --> 00:34:30,639
right and people around the world have

909
00:34:34,869 --> 00:34:32,800
been joining us you know i i i actually

910
00:34:37,030 --> 00:34:34,879
uh was talking to somebody who was a

911
00:34:38,470 --> 00:34:37,040
fisherman up in alaska and i was telling

912
00:34:40,230 --> 00:34:38,480
him that okay now things are going

913
00:34:41,589 --> 00:34:40,240
faster than we expected now and the

914
00:34:43,430 --> 00:34:41,599
thing that he said to me was you have to

915
00:34:45,030 --> 00:34:43,440
respect the respect the catch you know

916
00:34:46,389 --> 00:34:45,040
where the things go go slow and when the

917
00:34:48,629 --> 00:34:46,399
way when the fish are biting you keep

918
00:34:50,389 --> 00:34:48,639
going and uh that's the the amazing

919
00:34:52,230 --> 00:34:50,399
thing that things were going so well

920
00:34:54,230 --> 00:34:52,240
that they decided to just go ahead and

921
00:34:55,589 --> 00:34:54,240
uh and keep on keep unfolding via the

922
00:34:57,670 --> 00:34:55,599
sunshield so that's what we're looking

923
00:34:59,109 --> 00:34:57,680
at right now

924
00:35:01,510 --> 00:34:59,119
and and michelle i think you're you're

925
00:35:03,670 --> 00:35:01,520
seeing two different rooms uh on the

926
00:35:06,069 --> 00:35:03,680
broadcast we have we have two main rooms

927
00:35:08,630 --> 00:35:06,079
we actually have multiple rooms uh but

928
00:35:10,470 --> 00:35:08,640
our one room uh that's shown below there

929
00:35:12,230 --> 00:35:10,480
uh that's our that's actually our flight

930
00:35:13,190 --> 00:35:12,240
control room so that's sort of the nerve

931
00:35:15,670 --> 00:35:13,200
center

932
00:35:17,109 --> 00:35:15,680
uh of the con of the entire mission op

933
00:35:20,069 --> 00:35:17,119
center that's where actually commands

934
00:35:21,750 --> 00:35:20,079
get sent uh to to web so you can imagine

935
00:35:23,349 --> 00:35:21,760
that's a that's a that's a key room we

936
00:35:24,230 --> 00:35:23,359
have our controller sitting on the front

937
00:35:25,510 --> 00:35:24,240
row

938
00:35:27,829 --> 00:35:25,520
um

939
00:35:29,510 --> 00:35:27,839
we have our mission ops manager uh who's

940
00:35:31,589 --> 00:35:29,520
uh sort of the ring ringleader

941
00:35:32,710 --> 00:35:31,599
controlling the whole show he's in there

942
00:35:35,349 --> 00:35:32,720
right now

943
00:35:37,910 --> 00:35:35,359
along with our management team uh all of

944
00:35:40,630 --> 00:35:37,920
our ground communications through our uh

945
00:35:43,030 --> 00:35:40,640
our ground stations around the world i'm

946
00:35:46,230 --> 00:35:43,040
not quite sure what station we're on now

947
00:35:48,710 --> 00:35:46,240
uh but uh madrid uh in spain canberra in

948
00:35:51,109 --> 00:35:48,720
australia and goldstone in california

949
00:35:52,550 --> 00:35:51,119
those are our ground stations and and

950
00:35:55,109 --> 00:35:52,560
all those coordination with them is

951
00:35:57,030 --> 00:35:55,119
actually done from that room uh our

952
00:35:58,390 --> 00:35:57,040
timeline people those are folks that are

953
00:35:59,670 --> 00:35:58,400
very very busy

954
00:36:02,390 --> 00:35:59,680
um

955
00:36:04,230 --> 00:36:02,400
creating schedules for us uh minute by

956
00:36:06,230 --> 00:36:04,240
minute of operation we change those

957
00:36:08,390 --> 00:36:06,240
timelines slightly every day and they're

958
00:36:10,470 --> 00:36:08,400
just they're incredible what they do

959
00:36:12,790 --> 00:36:10,480
keeping us uh keeping us straight and

960
00:36:14,150 --> 00:36:12,800
keeping everybody on schedule the top

961
00:36:15,990 --> 00:36:14,160
the top view there is actually our

962
00:36:17,589 --> 00:36:16,000
engineering support room that's where

963
00:36:19,750 --> 00:36:17,599
our deployments team is back in that

964
00:36:22,550 --> 00:36:19,760
back corner uh we have all of our

965
00:36:24,630 --> 00:36:22,560
subsystems our attitude control our

966
00:36:27,430 --> 00:36:24,640
propulsion engineers our communication

967
00:36:30,950 --> 00:36:27,440
engineers thermal engineers and and our

968
00:36:33,349 --> 00:36:30,960
system engineers are all in that room uh

969
00:36:34,790 --> 00:36:33,359
watching uh and and watching over and

970
00:36:39,270 --> 00:36:34,800
making sure everything's safely

971
00:36:39,280 --> 00:36:42,790
excellent

972
00:36:46,550 --> 00:36:44,790
but just for any people that are joining

973
00:36:48,150 --> 00:36:46,560
us now on our broadcast um you're

974
00:36:50,310 --> 00:36:48,160
joining us for the the live

975
00:36:52,470 --> 00:36:50,320
commissioning of the james webb space

976
00:36:55,270 --> 00:36:52,480
telescope what's happening today is the

977
00:36:57,910 --> 00:36:55,280
very final stages of unfolding the the

978
00:36:59,910 --> 00:36:57,920
large incredibly innovative sun shield

979
00:37:02,310 --> 00:36:59,920
that will keep this telescope very very

980
00:37:04,470 --> 00:37:02,320
cold and the uh the ability to see very

981
00:37:06,230 --> 00:37:04,480
far into the infrared

982
00:37:08,550 --> 00:37:06,240
um infrared light as we were saying

983
00:37:10,310 --> 00:37:08,560
before is a form of heat that's that's

984
00:37:12,069 --> 00:37:10,320
how we normally think of it as the way

985
00:37:13,589 --> 00:37:12,079
we experience it but one of the things

986
00:37:15,750 --> 00:37:13,599
people often don't know

987
00:37:17,910 --> 00:37:15,760
is that objects that we think are very

988
00:37:20,790 --> 00:37:17,920
cold to human standards still emit quite

989
00:37:23,109 --> 00:37:20,800
a lot of infrared light and as keith had

990
00:37:25,270 --> 00:37:23,119
said before the uh the operating uh

991
00:37:27,990 --> 00:37:25,280
temperature of the telescope itself once

992
00:37:30,150 --> 00:37:28,000
it's shielded from the sun will be

993
00:37:32,310 --> 00:37:30,160
key that's pretty close to minus 400

994
00:37:33,829 --> 00:37:32,320
degrees below zero fahrenheit is that

995
00:37:38,150 --> 00:37:33,839
correct

996
00:37:40,069 --> 00:37:38,160
in uh you know on our side we always use

997
00:37:42,710 --> 00:37:40,079
kelvins uh which is an absolute scale

998
00:37:45,829 --> 00:37:42,720
from zero so yeah right around minus 400

999
00:37:47,670 --> 00:37:45,839
uh our you know our telescope

1000
00:37:50,310 --> 00:37:47,680
uh our instruments we have you know we

1001
00:37:53,109 --> 00:37:50,320
have four instruments on board and it's

1002
00:37:54,310 --> 00:37:53,119
really those camera detectors that are

1003
00:37:57,190 --> 00:37:54,320
you know

1004
00:37:58,550 --> 00:37:57,200
not not too much unlike your your your

1005
00:38:00,790 --> 00:37:58,560
camera that you have on your phone but

1006
00:38:02,790 --> 00:38:00,800
obviously much more elaborate and cold

1007
00:38:04,710 --> 00:38:02,800
uh so it's those detectors that we're

1008
00:38:06,630 --> 00:38:04,720
really trying to keep at that you know

1009
00:38:07,990 --> 00:38:06,640
minus 400 degree

1010
00:38:10,630 --> 00:38:08,000
rough temperature range to make sure

1011
00:38:11,990 --> 00:38:10,640
they're absolutely uh the only photons

1012
00:38:14,390 --> 00:38:12,000
of energy that are hitting those

1013
00:38:18,630 --> 00:38:14,400
detectors are really coming from the

1014
00:38:20,230 --> 00:38:18,640
object that that web is observing

1015
00:38:22,150 --> 00:38:20,240
and of course it's an incredible idea to

1016
00:38:24,069 --> 00:38:22,160
test something to that temperature and i

1017
00:38:26,310 --> 00:38:24,079
believe we might actually have some some

1018
00:38:28,310 --> 00:38:26,320
b-roll and some footage of testing of

1019
00:38:29,829 --> 00:38:28,320
the web telescope i remember that some

1020
00:38:31,990 --> 00:38:29,839
of that happened at the goddard space

1021
00:38:33,510 --> 00:38:32,000
flight center we we have a uh a space

1022
00:38:35,430 --> 00:38:33,520
environment chamber which actually

1023
00:38:37,190 --> 00:38:35,440
simulates uh going down to very cold

1024
00:38:40,150 --> 00:38:37,200
temperatures but then there was also

1025
00:38:41,750 --> 00:38:40,160
testing done in houston as well um keith

1026
00:38:43,109 --> 00:38:41,760
maybe you can talk to us a bit about

1027
00:38:44,470 --> 00:38:43,119
some of the tests that web went through

1028
00:38:46,550 --> 00:38:44,480
before its launch

1029
00:38:49,510 --> 00:38:46,560
yeah um you know

1030
00:38:51,589 --> 00:38:49,520
being being a cryogenic uh

1031
00:38:53,750 --> 00:38:51,599
observatory presents incredible

1032
00:38:56,310 --> 00:38:53,760
challenges on the ground for testing uh

1033
00:38:58,230 --> 00:38:56,320
you know testing it at room temperature

1034
00:39:00,310 --> 00:38:58,240
doesn't tell us a whole lot um

1035
00:39:02,150 --> 00:39:00,320
everything about web is designed to be

1036
00:39:04,790 --> 00:39:02,160
operated at these incredibly cold

1037
00:39:07,270 --> 00:39:04,800
temperatures so like the mirror itself

1038
00:39:09,190 --> 00:39:07,280
uh it actually is not a very good mirror

1039
00:39:11,190 --> 00:39:09,200
at these temperatures it's actually gets

1040
00:39:14,150 --> 00:39:11,200
better as it gets colder so in order for

1041
00:39:15,829 --> 00:39:14,160
us to test the optical system or the

1042
00:39:17,430 --> 00:39:15,839
instruments we have to take them into

1043
00:39:18,950 --> 00:39:17,440
incredibly cold temperatures so we did

1044
00:39:21,670 --> 00:39:18,960
some testing at the goddard space flight

1045
00:39:24,069 --> 00:39:21,680
center uh in maryland uh that's where we

1046
00:39:26,310 --> 00:39:24,079
took our entire instrument package uh

1047
00:39:29,430 --> 00:39:26,320
put it in one of these chambers uh we

1048
00:39:31,270 --> 00:39:29,440
actually pump liquid helium uh around

1049
00:39:33,030 --> 00:39:31,280
the walls of this vacuum chamber and

1050
00:39:35,109 --> 00:39:33,040
that's what drives us down to these uh

1051
00:39:37,349 --> 00:39:35,119
really really cold temperatures once

1052
00:39:39,030 --> 00:39:37,359
that instrument package was tested at

1053
00:39:42,069 --> 00:39:39,040
those temperatures we introduced it to

1054
00:39:43,750 --> 00:39:42,079
the telescope uh and uh the telescope

1055
00:39:44,950 --> 00:39:43,760
and the instruments were integrated and

1056
00:39:47,190 --> 00:39:44,960
it was too big

1057
00:39:48,390 --> 00:39:47,200
for our facilities at the goddard space

1058
00:39:50,950 --> 00:39:48,400
flight center so we took it all the way

1059
00:39:53,190 --> 00:39:50,960
down to houston uh in texas to the

1060
00:39:55,349 --> 00:39:53,200
johnson space center in chamber a

1061
00:39:58,390 --> 00:39:55,359
chamber a is famous

1062
00:40:00,630 --> 00:39:58,400
uh for being built to test the uh

1063
00:40:02,790 --> 00:40:00,640
for the apollo program so

1064
00:40:04,550 --> 00:40:02,800
again we completely retrofitted again

1065
00:40:07,190 --> 00:40:04,560
worked with our team down at the johnson

1066
00:40:09,430 --> 00:40:07,200
space center again incredible nasa team

1067
00:40:11,750 --> 00:40:09,440
uh between centers and what we did there

1068
00:40:14,390 --> 00:40:11,760
is we completely turned that chamber

1069
00:40:17,670 --> 00:40:14,400
into an optical test facility that could

1070
00:40:19,990 --> 00:40:17,680
be operated at our temperatures uh and

1071
00:40:22,069 --> 00:40:20,000
and that that again an incredible

1072
00:40:23,030 --> 00:40:22,079
achievement by by the team that did that

1073
00:40:24,470 --> 00:40:23,040
work

1074
00:40:28,069 --> 00:40:24,480
we were under

1075
00:40:30,470 --> 00:40:28,079
down there

1076
00:40:32,309 --> 00:40:30,480
i i want to say well over 100 days it

1077
00:40:33,829 --> 00:40:32,319
was almost nearly four months uh yeah

1078
00:40:35,030 --> 00:40:33,839
you can see some of the footage of us

1079
00:40:36,950 --> 00:40:35,040
coming out

1080
00:40:38,950 --> 00:40:36,960
of the chamber into the clean room so

1081
00:40:41,750 --> 00:40:38,960
this was after the testing testing was

1082
00:40:43,510 --> 00:40:41,760
done um so yeah we had a team we had

1083
00:40:45,430 --> 00:40:43,520
pretty much the entire telescope and

1084
00:40:47,270 --> 00:40:45,440
instrument team and spacecraft team down

1085
00:40:48,150 --> 00:40:47,280
at johnson space center for nearly 100

1086
00:40:50,870 --> 00:40:48,160
days

1087
00:40:53,190 --> 00:40:50,880
uh and if i think that was in 2017 so

1088
00:40:55,349 --> 00:40:53,200
that was when hurricane harvey uh

1089
00:40:58,309 --> 00:40:55,359
happened to to come through houston and

1090
00:41:00,230 --> 00:40:58,319
uh and presented some challenges for us

1091
00:41:01,829 --> 00:41:00,240
and our team down there uh supporting

1092
00:41:03,990 --> 00:41:01,839
that test but we were able to test

1093
00:41:05,589 --> 00:41:04,000
through through that hurricane uh you

1094
00:41:07,589 --> 00:41:05,599
know that that really devastated that

1095
00:41:10,150 --> 00:41:07,599
area and it actually you know a lot of

1096
00:41:11,910 --> 00:41:10,160
the people that worked on the facilities

1097
00:41:14,309 --> 00:41:11,920
and and were working at a johnson space

1098
00:41:16,790 --> 00:41:14,319
sites space flight center were highly

1099
00:41:19,109 --> 00:41:16,800
impacted in their personal life by

1100
00:41:20,950 --> 00:41:19,119
harvey but they they kept at it and

1101
00:41:22,950 --> 00:41:20,960
supported us so that was that was quite

1102
00:41:25,349 --> 00:41:22,960
a that was quite a uh you know

1103
00:41:26,790 --> 00:41:25,359
achievement for for for our team to and

1104
00:41:28,309 --> 00:41:26,800
nothing's been done like that before

1105
00:41:30,950 --> 00:41:28,319
you've net we've never taken something

1106
00:41:32,710 --> 00:41:30,960
this large down an optical system uh to

1107
00:41:35,190 --> 00:41:32,720
these temperatures and been able to do

1108
00:41:36,790 --> 00:41:35,200
that so uh quite an end you know really

1109
00:41:38,550 --> 00:41:36,800
really tough testing web on the ground

1110
00:41:39,990 --> 00:41:38,560
that's why we like it in space

1111
00:41:41,349 --> 00:41:40,000
it's at home it's always wanted to be

1112
00:41:43,349 --> 00:41:41,359
there so that's why we're so excited

1113
00:41:44,550 --> 00:41:43,359
where it is now

1114
00:41:45,750 --> 00:41:44,560
absolutely

1115
00:41:47,510 --> 00:41:45,760
well let's talk about you know you

1116
00:41:49,430 --> 00:41:47,520
mentioned his home in space it's going

1117
00:41:51,190 --> 00:41:49,440
to a very specific location in space

1118
00:41:52,550 --> 00:41:51,200
it's not just going anywhere out there

1119
00:41:55,270 --> 00:41:52,560
it's going to a point that we call the

1120
00:41:56,710 --> 00:41:55,280
second lagrange point or or l2

1121
00:41:58,630 --> 00:41:56,720
and and maybe you can give us a little

1122
00:42:01,030 --> 00:41:58,640
bit of a talk about you know

1123
00:42:02,470 --> 00:42:01,040
where is this and and why would we put

1124
00:42:03,910 --> 00:42:02,480
web at the lagrange point what is the

1125
00:42:06,069 --> 00:42:03,920
lagrange point to begin with how about

1126
00:42:07,990 --> 00:42:06,079
that yeah yeah so you know these

1127
00:42:10,069 --> 00:42:08,000
lagrange points are interesting places

1128
00:42:12,150 --> 00:42:10,079
where two large bodies like the earth

1129
00:42:14,230 --> 00:42:12,160
and sun the gravity of them sort of

1130
00:42:17,349 --> 00:42:14,240
interacts in a way where you can put

1131
00:42:18,950 --> 00:42:17,359
objects there and with some control you

1132
00:42:21,829 --> 00:42:18,960
can kind of keep them there so what's

1133
00:42:23,910 --> 00:42:21,839
really nice about lagrange point two uh

1134
00:42:26,790 --> 00:42:23,920
every large two body system has five

1135
00:42:28,950 --> 00:42:26,800
lagrange points uh we use lagrange point

1136
00:42:31,270 --> 00:42:28,960
two which is on the opposite side of the

1137
00:42:33,349 --> 00:42:31,280
sun so the sun line and the earth we're

1138
00:42:36,069 --> 00:42:33,359
a million miles away from the sun on the

1139
00:42:37,750 --> 00:42:36,079
other side uh and and and what's nice

1140
00:42:40,630 --> 00:42:37,760
about that as the earth goes around the

1141
00:42:42,470 --> 00:42:40,640
sun uh the web just kind of tracks along

1142
00:42:44,630 --> 00:42:42,480
with the with the earth as it goes in

1143
00:42:46,309 --> 00:42:44,640
this animation you can see and we're

1144
00:42:48,630 --> 00:42:46,319
always able to keep the earth and the

1145
00:42:51,510 --> 00:42:48,640
sun uh in a line with us and that's

1146
00:42:53,270 --> 00:42:51,520
really what lets us use a sun shade uh

1147
00:42:55,990 --> 00:42:53,280
our sun shield like we have with webb

1148
00:42:58,470 --> 00:42:56,000
that blocks out the earth and the sun

1149
00:42:59,910 --> 00:42:58,480
and keeps webb in darkness all the time

1150
00:43:02,069 --> 00:42:59,920
the other nice thing about the lagrange

1151
00:43:04,630 --> 00:43:02,079
point is it is a million miles away but

1152
00:43:06,790 --> 00:43:04,640
that's really not that far so it allows

1153
00:43:09,430 --> 00:43:06,800
us to uh have a reasonably sized

1154
00:43:11,750 --> 00:43:09,440
communication system uh we can we're

1155
00:43:13,829 --> 00:43:11,760
going to create gigabytes of data every

1156
00:43:15,910 --> 00:43:13,839
day from our cameras and our and our

1157
00:43:17,430 --> 00:43:15,920
instrument detectors uh we have to get

1158
00:43:20,309 --> 00:43:17,440
all that data to the ground and we don't

1159
00:43:22,069 --> 00:43:20,319
really need huge antennas uh to do that

1160
00:43:23,589 --> 00:43:22,079
so that's one nice thing about million

1161
00:43:25,270 --> 00:43:23,599
miles sounds far

1162
00:43:27,190 --> 00:43:25,280
but remember we're sending data from

1163
00:43:28,710 --> 00:43:27,200
pluto and other missions back to earth

1164
00:43:30,630 --> 00:43:28,720
and it takes a long time so this is good

1165
00:43:32,230 --> 00:43:30,640
for us uh the other thing about lagrange

1166
00:43:34,069 --> 00:43:32,240
point two is it's it's an it's far

1167
00:43:36,950 --> 00:43:34,079
enough away from the earth also that uh

1168
00:43:39,109 --> 00:43:36,960
it creates a nice cold area for us uh to

1169
00:43:41,109 --> 00:43:39,119
do that so it's almost like it was uh

1170
00:43:42,390 --> 00:43:41,119
it's just the best place to go if you

1171
00:43:43,510 --> 00:43:42,400
want to do you know you want to do

1172
00:43:44,790 --> 00:43:43,520
astronomy

1173
00:43:46,790 --> 00:43:44,800
especially and if you want a cold

1174
00:43:49,190 --> 00:43:46,800
telescope and that's just everything

1175
00:43:50,870 --> 00:43:49,200
about the architecture the orbit

1176
00:43:52,550 --> 00:43:50,880
everything has been about getting this

1177
00:43:54,150 --> 00:43:52,560
telescope cold

1178
00:43:57,829 --> 00:43:54,160
but in a reasonable distance to the

1179
00:44:00,790 --> 00:43:59,510
thank you for that again for people

1180
00:44:02,230 --> 00:44:00,800
joining us you're looking at live

1181
00:44:04,230 --> 00:44:02,240
coverage of the commissioning of the

1182
00:44:06,550 --> 00:44:04,240
james webb space telescope the final

1183
00:44:08,790 --> 00:44:06,560
stages of the unfolding of its huge

1184
00:44:10,710 --> 00:44:08,800
incredibly spectacular heat shield and

1185
00:44:12,390 --> 00:44:10,720
you're looking at a live image there

1186
00:44:14,150 --> 00:44:12,400
from the mock the mission operations

1187
00:44:15,750 --> 00:44:14,160
center that's at the space telescope

1188
00:44:17,910 --> 00:44:15,760
science institute at johns hopkins

1189
00:44:20,630 --> 00:44:17,920
university so as you can see there's all

1190
00:44:22,790 --> 00:44:20,640
kinds of people standing around there i

1191
00:44:24,230 --> 00:44:22,800
know that for me the last couple of days

1192
00:44:26,230 --> 00:44:24,240
it's almost been like a kid getting up

1193
00:44:28,230 --> 00:44:26,240
on christmas morning i've been checking

1194
00:44:30,390 --> 00:44:28,240
my my email to see what was happening

1195
00:44:32,069 --> 00:44:30,400
and how quickly this was going and today

1196
00:44:34,309 --> 00:44:32,079
we're looking at the final stages of

1197
00:44:36,710 --> 00:44:34,319
unfolding this uh this heat shield uh

1198
00:44:38,710 --> 00:44:36,720
this is truly one of the most incredible

1199
00:44:40,390 --> 00:44:38,720
and engineering marvels of the web

1200
00:44:42,309 --> 00:44:40,400
telescope there are there are many but

1201
00:44:43,829 --> 00:44:42,319
this is the first one that has to be uh

1202
00:44:45,270 --> 00:44:43,839
accomplished before the rest of them can

1203
00:44:47,109 --> 00:44:45,280
start to turn on

1204
00:44:49,510 --> 00:44:47,119
and uh keith maybe this is a good time

1205
00:44:51,589 --> 00:44:49,520
for a look ahead so you know once we

1206
00:44:53,750 --> 00:44:51,599
have and i'm touching wood because we're

1207
00:44:55,750 --> 00:44:53,760
still doing it but once we have these uh

1208
00:44:57,190 --> 00:44:55,760
the sunshield completely unfolded what

1209
00:44:59,190 --> 00:44:57,200
are some of the next things that need to

1210
00:45:01,589 --> 00:44:59,200
happen before we have a full

1211
00:45:03,910 --> 00:45:01,599
commissioned observatory

1212
00:45:06,870 --> 00:45:03,920
yeah so you know for for our sunshield

1213
00:45:08,950 --> 00:45:06,880
team um this this is this is a big day

1214
00:45:12,150 --> 00:45:08,960
this is a big day for all of us uh to

1215
00:45:14,309 --> 00:45:12,160
get this this sun shield out um so we

1216
00:45:16,870 --> 00:45:14,319
will we will we will let them revel

1217
00:45:18,309 --> 00:45:16,880
quite a bit um uh for the for the rest

1218
00:45:20,950 --> 00:45:18,319
of the team uh for the rest of the

1219
00:45:22,470 --> 00:45:20,960
deployments team that's still here um

1220
00:45:24,309 --> 00:45:22,480
and for the rest of commissioning we

1221
00:45:26,550 --> 00:45:24,319
have a lot of work to do uh we got a

1222
00:45:28,870 --> 00:45:26,560
long way to go here so uh we'll we'll

1223
00:45:31,109 --> 00:45:28,880
take this uh as we get it uh we take

1224
00:45:33,190 --> 00:45:31,119
each one of our deployments as a small

1225
00:45:35,109 --> 00:45:33,200
you know it's a small touchdown but the

1226
00:45:37,829 --> 00:45:35,119
game's still going so next up is our

1227
00:45:39,910 --> 00:45:37,839
telescope and you know that is

1228
00:45:44,550 --> 00:45:39,920
you know that that's what it's all about

1229
00:45:46,790 --> 00:45:44,560
uh so uh starting uh this evening uh

1230
00:45:48,470 --> 00:45:46,800
we're gonna get some heaters on to start

1231
00:45:50,710 --> 00:45:48,480
heating up the motors

1232
00:45:54,230 --> 00:45:50,720
uh that actually do the deployment of

1233
00:45:56,950 --> 00:45:54,240
our secondary mirror uh system uh we'll

1234
00:45:59,030 --> 00:45:56,960
get that heated up uh and uh and and

1235
00:46:01,270 --> 00:45:59,040
we'll get we'll get on with that uh

1236
00:46:03,510 --> 00:46:01,280
tomorrow uh we'll start we'll start

1237
00:46:05,190 --> 00:46:03,520
doing that operation so uh that's that's

1238
00:46:06,470 --> 00:46:05,200
that's you know really

1239
00:46:08,550 --> 00:46:06,480
again i got to make sure my timeline

1240
00:46:10,230 --> 00:46:08,560
depending on how long the day goes

1241
00:46:11,910 --> 00:46:10,240
we'll we'll update everybody when we're

1242
00:46:13,670 --> 00:46:11,920
actually right actually going to do that

1243
00:46:15,910 --> 00:46:13,680
so our secondary mirror system comes out

1244
00:46:17,430 --> 00:46:15,920
you can see in this animation here and

1245
00:46:19,430 --> 00:46:17,440
we actually have a lot of other

1246
00:46:21,589 --> 00:46:19,440
deployables on web that we don't really

1247
00:46:23,589 --> 00:46:21,599
talk about uh and not just because

1248
00:46:25,910 --> 00:46:23,599
they're uh you know they're not as

1249
00:46:27,589 --> 00:46:25,920
newsworthy maybe as a telescope or or

1250
00:46:29,109 --> 00:46:27,599
the sun shield but we have a lot of

1251
00:46:31,910 --> 00:46:29,119
radiator shades we have to get out

1252
00:46:34,150 --> 00:46:31,920
tonight on the spacecraft uh the the

1253
00:46:36,069 --> 00:46:34,160
sunshield and the telescope get all the

1254
00:46:37,910 --> 00:46:36,079
attention sometime but our spacecraft is

1255
00:46:39,829 --> 00:46:37,920
critical that we control all its

1256
00:46:40,790 --> 00:46:39,839
temperatures and we don't quite have all

1257
00:46:45,349 --> 00:46:40,800
of the

1258
00:46:47,829 --> 00:46:45,359
our radiators which cool off our

1259
00:46:49,990 --> 00:46:47,839
spacecraft we have to get those out uh

1260
00:46:51,750 --> 00:46:50,000
this this evening they're much more i

1261
00:46:53,910 --> 00:46:51,760
don't want to call them simple uh but

1262
00:46:55,829 --> 00:46:53,920
they're they're much more typical type

1263
00:46:57,910 --> 00:46:55,839
deployments uh that what that will do

1264
00:46:59,750 --> 00:46:57,920
this evening for the spacecraft

1265
00:47:01,829 --> 00:46:59,760
and then again we get into our telescope

1266
00:47:04,790 --> 00:47:01,839
deployments over the next couple days uh

1267
00:47:07,430 --> 00:47:04,800
culminating in the two wings which each

1268
00:47:08,230 --> 00:47:07,440
wing has three of the 18 segments on it

1269
00:47:09,910 --> 00:47:08,240
so

1270
00:47:13,349 --> 00:47:09,920
you can see we'll do that uh what we

1271
00:47:15,030 --> 00:47:13,359
call our port wing uh our plus j2 side

1272
00:47:16,550 --> 00:47:15,040
and our in our coordinate system we call

1273
00:47:18,630 --> 00:47:16,560
that port as you're looking forward and

1274
00:47:20,950 --> 00:47:18,640
then our starboard wing uh on the other

1275
00:47:23,990 --> 00:47:20,960
side so that should be later uh in the

1276
00:47:25,990 --> 00:47:24,000
week and uh we have and then yes we will

1277
00:47:27,349 --> 00:47:26,000
we will uh breathe a big sigh of relief

1278
00:47:30,710 --> 00:47:27,359
at that point because we will have a

1279
00:47:32,390 --> 00:47:30,720
fully deployed observatory um the next

1280
00:47:34,309 --> 00:47:32,400
the next thing that our team will get

1281
00:47:37,430 --> 00:47:34,319
into i'm just i'm just listening to see

1282
00:47:39,510 --> 00:47:37,440
when this motor move will start um

1283
00:47:42,630 --> 00:47:39,520
this is our longest move by the way this

1284
00:47:44,549 --> 00:47:42,640
one on the app so this is a very long uh

1285
00:47:45,510 --> 00:47:44,559
move on the aft on layer 4 here so

1286
00:47:47,670 --> 00:47:45,520
that's why

1287
00:47:49,829 --> 00:47:47,680
this is going on a little long a lot a

1288
00:47:52,390 --> 00:47:49,839
lot of cable has to be drawn in for this

1289
00:47:54,150 --> 00:47:52,400
specific configuration uh but next uh

1290
00:47:56,950 --> 00:47:54,160
what what uh then we kind of turn over

1291
00:47:59,190 --> 00:47:56,960
the telescope to the telescope team uh

1292
00:48:00,950 --> 00:47:59,200
hopefully next week uh and what they're

1293
00:48:02,710 --> 00:48:00,960
gonna start doing is uh we have all

1294
00:48:05,349 --> 00:48:02,720
those 18 segments they're all locked

1295
00:48:07,510 --> 00:48:05,359
down uh for launch we actually sort of

1296
00:48:09,750 --> 00:48:07,520
snubbed them up tight for launch uh

1297
00:48:11,430 --> 00:48:09,760
they're going to move those mirrors

1298
00:48:16,230 --> 00:48:11,440
lead on up

1299
00:48:16,240 --> 00:48:21,510
which then indicates that layer 4 is now

1300
00:48:21,520 --> 00:48:32,790
[Music]

1301
00:48:35,510 --> 00:48:33,990
you can tell the team maybe we're

1302
00:48:39,430 --> 00:48:35,520
getting old hat at this after four

1303
00:48:43,670 --> 00:48:41,750
so uh so yeah when layer one yesterday

1304
00:48:45,270 --> 00:48:43,680
was uh quite the celebration in layer

1305
00:48:47,670 --> 00:48:45,280
two maybe a little you know still some

1306
00:48:49,990 --> 00:48:47,680
celebration but uh layer four we have to

1307
00:48:51,750 --> 00:48:50,000
give it a little bit of love too uh and

1308
00:48:53,670 --> 00:48:51,760
cheer it on so layer five is the big one

1309
00:48:56,630 --> 00:48:53,680
coming up uh but yeah we're gonna turn

1310
00:48:58,309 --> 00:48:56,640
that telescope over to our uh our

1311
00:49:00,790 --> 00:48:58,319
telescope team and they're gonna move

1312
00:49:01,670 --> 00:49:00,800
all those 18 mirrors off their launch

1313
00:49:03,589 --> 00:49:01,680
stops

1314
00:49:05,430 --> 00:49:03,599
each one will be moved a little bit

1315
00:49:08,309 --> 00:49:05,440
they'll go around all 18 and that's

1316
00:49:09,990 --> 00:49:08,319
pretty much a 24 hour operation uh and

1317
00:49:13,270 --> 00:49:10,000
it's going to take them about 10 days to

1318
00:49:15,430 --> 00:49:13,280
do that um so for for a lot of us we're

1319
00:49:18,069 --> 00:49:15,440
looking forward to

1320
00:49:19,750 --> 00:49:18,079
the grass growing even slower uh when it

1321
00:49:21,109 --> 00:49:19,760
comes to deployment so

1322
00:49:23,270 --> 00:49:21,119
we're actually looking forward to a

1323
00:49:25,430 --> 00:49:23,280
little bit of a pace break there and and

1324
00:49:26,950 --> 00:49:25,440
actually let them our telescope team is

1325
00:49:29,349 --> 00:49:26,960
uh sort of biting at the bit to get

1326
00:49:31,510 --> 00:49:29,359
started uh so they they can't wait to

1327
00:49:33,430 --> 00:49:31,520
get that going so once they do all that

1328
00:49:34,950 --> 00:49:33,440
uh once they wiggle those mirrors around

1329
00:49:38,069 --> 00:49:34,960
and make sure they move and track their

1330
00:49:39,829 --> 00:49:38,079
positions uh uh you know we'll we'll

1331
00:49:41,109 --> 00:49:39,839
we'll be turning on a whole lot of other

1332
00:49:43,030 --> 00:49:41,119
equipment we're actually got our

1333
00:49:45,270 --> 00:49:43,040
instruments we're turning them on over

1334
00:49:47,430 --> 00:49:45,280
the next couple weeks getting them going

1335
00:49:48,710 --> 00:49:47,440
we have a cryo cooler on board i

1336
00:49:49,910 --> 00:49:48,720
mentioned really really cold

1337
00:49:52,069 --> 00:49:49,920
temperatures

1338
00:49:53,750 --> 00:49:52,079
but we have one instrument that needs it

1339
00:49:55,430 --> 00:49:53,760
needs it to be really really cold and

1340
00:49:57,910 --> 00:49:55,440
that's our mid-infrared instrument

1341
00:49:59,829 --> 00:49:57,920
provided by our european partners uh we

1342
00:50:01,109 --> 00:49:59,839
actually have a cooler on board that

1343
00:50:02,870 --> 00:50:01,119
takes that instrument all the way down

1344
00:50:04,150 --> 00:50:02,880
to 6 kelvin

1345
00:50:05,589 --> 00:50:04,160
so that's

1346
00:50:08,309 --> 00:50:05,599
i don't know that's that's getting

1347
00:50:10,309 --> 00:50:08,319
really really close to the minus 460

1348
00:50:12,390 --> 00:50:10,319
degree you know really really close to

1349
00:50:15,190 --> 00:50:12,400
zero there so you see this animation of

1350
00:50:18,309 --> 00:50:15,200
our instrument package in there

1351
00:50:20,630 --> 00:50:18,319
that's our four instruments uh buried in

1352
00:50:22,710 --> 00:50:20,640
the heart of web there so one of them is

1353
00:50:24,230 --> 00:50:22,720
the the mid infrared instrument it's

1354
00:50:26,870 --> 00:50:24,240
kind of uh

1355
00:50:28,390 --> 00:50:26,880
covered up there on the left side and uh

1356
00:50:31,510 --> 00:50:28,400
we actually going to turn on a cooler

1357
00:50:34,150 --> 00:50:31,520
tonight uh to begin circulating warm gas

1358
00:50:35,349 --> 00:50:34,160
up through its plumbing supplies uh to

1359
00:50:37,589 --> 00:50:35,359
make sure we don't get any ice

1360
00:50:38,950 --> 00:50:37,599
contamination on the lines because

1361
00:50:40,309 --> 00:50:38,960
everything on the cold side right now

1362
00:50:42,549 --> 00:50:40,319
it's getting really really cold and we

1363
00:50:43,990 --> 00:50:42,559
don't want any water ice to contaminate

1364
00:50:46,230 --> 00:50:44,000
their their cooler line so we'll be

1365
00:50:48,790 --> 00:50:46,240
doing that tonight actually

1366
00:50:52,150 --> 00:50:48,800
but yeah all this is about that 29 to 30

1367
00:50:54,309 --> 00:50:52,160
days of uh of uh on the edge

1368
00:50:56,630 --> 00:50:54,319
but over the next two weeks uh it'll be

1369
00:50:58,870 --> 00:50:56,640
a little bit slower pace uh ultimately

1370
00:51:01,430 --> 00:50:58,880
culminating in our final mid-course

1371
00:51:04,069 --> 00:51:01,440
correction uh sometime in late january

1372
00:51:06,390 --> 00:51:04,079
which will insert us officially into

1373
00:51:09,190 --> 00:51:06,400
that l2 orbit and at that point we would

1374
00:51:11,750 --> 00:51:09,200
consider our spacecraft uh

1375
00:51:13,510 --> 00:51:11,760
basically commissioned uh and at that

1376
00:51:15,109 --> 00:51:13,520
point it's all about the telescope and

1377
00:51:17,510 --> 00:51:15,119
the instruments and we just can't wait

1378
00:51:18,230 --> 00:51:17,520
to turn it over to them

1379
00:51:19,910 --> 00:51:18,240
well

1380
00:51:21,750 --> 00:51:19,920
you mentioned the miri instrument and

1381
00:51:23,670 --> 00:51:21,760
let's talk a bit about the sort of the

1382
00:51:25,430 --> 00:51:23,680
whole instrument you know package that

1383
00:51:26,470 --> 00:51:25,440
web has that the different instruments

1384
00:51:28,630 --> 00:51:26,480
that are that are on it and the

1385
00:51:29,829 --> 00:51:28,640
different capabilities they have uh so

1386
00:51:33,030 --> 00:51:29,839
do you want to sort of walk us through

1387
00:51:35,109 --> 00:51:33,040
the the four main science instruments

1388
00:51:36,309 --> 00:51:35,119
yeah so we have a near infrared

1389
00:51:37,750 --> 00:51:36,319
instrument again we're going to talk a

1390
00:51:40,630 --> 00:51:37,760
little bit about the wavelengths that

1391
00:51:42,630 --> 00:51:40,640
these are in our our our one instrument

1392
00:51:44,870 --> 00:51:42,640
uh that's the we call the us

1393
00:51:47,349 --> 00:51:44,880
contribution to the instrument package

1394
00:51:49,270 --> 00:51:47,359
uh is the is the near camera

1395
00:51:52,150 --> 00:51:49,280
that's been provided by the university

1396
00:51:53,829 --> 00:51:52,160
of arizona uh in a partnership with with

1397
00:51:55,190 --> 00:51:53,839
uh with lockheed

1398
00:51:58,630 --> 00:51:55,200
so they have built that that is a

1399
00:52:01,510 --> 00:51:58,640
fantastic imaging uh camera uh that will

1400
00:52:04,630 --> 00:52:01,520
be one of our workhorse cameras uh uh

1401
00:52:06,950 --> 00:52:04,640
doing a lot of lot of imaging for us

1402
00:52:09,829 --> 00:52:06,960
the one the one interesting thing about

1403
00:52:11,589 --> 00:52:09,839
that camera is uh uh if they are

1404
00:52:13,910 --> 00:52:11,599
telescope scientists

1405
00:52:15,829 --> 00:52:13,920
um i just want to

1406
00:52:20,150 --> 00:52:15,839
let you know that those motor alarms

1407
00:52:24,069 --> 00:52:21,030
okay

1408
00:52:26,390 --> 00:52:24,079
yep so as you heard nancy

1409
00:52:29,430 --> 00:52:26,400
as you heard nancy say there uh we

1410
00:52:30,870 --> 00:52:29,440
typically get some alarms uh but uh over

1411
00:52:32,950 --> 00:52:30,880
the course we've learned that those

1412
00:52:35,750 --> 00:52:32,960
alarms are can be dismissed or they're

1413
00:52:37,430 --> 00:52:35,760
just uh they're just routine now so uh

1414
00:52:39,829 --> 00:52:37,440
everything about i mentioned all that

1415
00:52:42,309 --> 00:52:39,839
data that comes down from web uh any

1416
00:52:44,549 --> 00:52:42,319
spacecraft it's it's uh

1417
00:52:46,710 --> 00:52:44,559
we we have alarms on them to alert

1418
00:52:49,190 --> 00:52:46,720
engineers if there's any problems but we

1419
00:52:51,589 --> 00:52:49,200
have a formal dismissive dismissing

1420
00:52:53,270 --> 00:52:51,599
process which she was just referring to

1421
00:52:54,150 --> 00:52:53,280
yeah so back to that near camera real

1422
00:52:55,109 --> 00:52:54,160
fast

1423
00:52:58,710 --> 00:52:55,119
it

1424
00:53:00,790 --> 00:52:58,720
wavefront sensing

1425
00:53:02,710 --> 00:53:00,800
camera and what that means is uh that

1426
00:53:03,829 --> 00:53:02,720
camera is used by our telescope

1427
00:53:06,710 --> 00:53:03,839
scientists

1428
00:53:08,069 --> 00:53:06,720
to determine the uh optical imaging

1429
00:53:09,750 --> 00:53:08,079
quality that's coming out of our

1430
00:53:12,390 --> 00:53:09,760
telescope so they'll actually retrieve

1431
00:53:15,030 --> 00:53:12,400
an image uh using near cam they'll study

1432
00:53:16,390 --> 00:53:15,040
it on the ground they'll use that image

1433
00:53:17,829 --> 00:53:16,400
on the ground to determine all the

1434
00:53:20,150 --> 00:53:17,839
different settings that they need to do

1435
00:53:23,829 --> 00:53:20,160
to align these 18 mirror segments so

1436
00:53:28,630 --> 00:53:27,030
if you if you move on we have a camera

1437
00:53:31,670 --> 00:53:28,640
or another instrument called the fine

1438
00:53:33,910 --> 00:53:31,680
guider uh and nearest uh that's a near

1439
00:53:36,710 --> 00:53:33,920
end another near infrared instrument uh

1440
00:53:38,390 --> 00:53:36,720
but it's also our fine guider and uh

1441
00:53:41,349 --> 00:53:38,400
that's provided by the canadian space

1442
00:53:43,270 --> 00:53:41,359
agency uh in partnership with them and

1443
00:53:45,750 --> 00:53:43,280
what that instrument does it also does

1444
00:53:48,630 --> 00:53:45,760
it does incredible science uh with with

1445
00:53:51,030 --> 00:53:48,640
some spectroscopy and uh it also is our

1446
00:53:52,790 --> 00:53:51,040
guider uh so that guider actually works

1447
00:53:56,230 --> 00:53:52,800
with our spacecraft attitude control

1448
00:53:57,910 --> 00:53:56,240
system it also works with our uh what we

1449
00:53:59,910 --> 00:53:57,920
call our fine steering mirror which is

1450
00:54:01,829 --> 00:53:59,920
on the telescope and those all those

1451
00:54:04,390 --> 00:54:01,839
systems working together

1452
00:54:06,390 --> 00:54:04,400
uh actually help web point at whatever

1453
00:54:08,950 --> 00:54:06,400
it's trying to image and take data from

1454
00:54:10,950 --> 00:54:08,960
we have incredible precision pointing uh

1455
00:54:13,670 --> 00:54:10,960
and we have observations that can be

1456
00:54:15,990 --> 00:54:13,680
done up to 14 days so we can hold steady

1457
00:54:18,309 --> 00:54:16,000
on anything that we're looking at for 14

1458
00:54:20,309 --> 00:54:18,319
days and the fine guider from canada is

1459
00:54:22,549 --> 00:54:20,319
is a key part of that

1460
00:54:24,950 --> 00:54:22,559
we have a near infrared spectrograph

1461
00:54:27,589 --> 00:54:24,960
again that's sort of a partnership uh

1462
00:54:31,190 --> 00:54:27,599
between our european partners and the

1463
00:54:32,950 --> 00:54:31,200
united states um and and that is really

1464
00:54:34,630 --> 00:54:32,960
one of our key science instruments

1465
00:54:36,390 --> 00:54:34,640
you're not going to get you know the

1466
00:54:38,789 --> 00:54:36,400
images out of that what that instrument

1467
00:54:41,510 --> 00:54:38,799
does is it breaks light down into its

1468
00:54:42,870 --> 00:54:41,520
wavelengths and that's really a key uh

1469
00:54:44,230 --> 00:54:42,880
you know i'll let you talk about that in

1470
00:54:46,470 --> 00:54:44,240
a second michelle i'm gonna i'm just

1471
00:54:48,549 --> 00:54:46,480
saying but that's a near spectrograph um

1472
00:54:50,710 --> 00:54:48,559
i'll let you go into breaking down light

1473
00:54:52,390 --> 00:54:50,720
uh because that is key for for what

1474
00:54:53,910 --> 00:54:52,400
we're trying to do science-wise

1475
00:54:55,829 --> 00:54:53,920
uh and then we have this mid-infrared

1476
00:54:58,230 --> 00:54:55,839
instrument which is going further into

1477
00:54:59,910 --> 00:54:58,240
the deep infrared uh and that's really

1478
00:55:02,470 --> 00:54:59,920
one of the key instruments for helping

1479
00:55:04,230 --> 00:55:02,480
us confirm some other observations as

1480
00:55:06,069 --> 00:55:04,240
far as how far away different objects

1481
00:55:07,589 --> 00:55:06,079
are but michelle you can definitely

1482
00:55:09,910 --> 00:55:07,599
definitely pick it up from there i'm

1483
00:55:11,829 --> 00:55:09,920
running out of my knowledge based on on

1484
00:55:13,270 --> 00:55:11,839
these instruments

1485
00:55:15,030 --> 00:55:13,280
yeah this is the thing that you know as

1486
00:55:16,870 --> 00:55:15,040
astronomers we're just so excited about

1487
00:55:18,789 --> 00:55:16,880
there's so many different uh components

1488
00:55:20,870 --> 00:55:18,799
of web i mean not just the the beautiful

1489
00:55:22,230 --> 00:55:20,880
images that will be produced but as you

1490
00:55:24,150 --> 00:55:22,240
said keith the idea of breaking light

1491
00:55:25,670 --> 00:55:24,160
into its components is a technique

1492
00:55:28,630 --> 00:55:25,680
called spectroscopy

1493
00:55:30,549 --> 00:55:28,640
and uh this is really an incredibly

1494
00:55:32,870 --> 00:55:30,559
powerful technique because you might ask

1495
00:55:34,549 --> 00:55:32,880
yourself when astronomers say you know

1496
00:55:35,990 --> 00:55:34,559
we know what the stars are made of you

1497
00:55:37,829 --> 00:55:36,000
know they're made of you know mostly

1498
00:55:39,910 --> 00:55:37,839
hydrogen and helium but usually a little

1499
00:55:41,430 --> 00:55:39,920
smattering of everything else uh you

1500
00:55:43,589 --> 00:55:41,440
know what you know when we see a star

1501
00:55:45,430 --> 00:55:43,599
exploding and we say oh you know we've

1502
00:55:48,230 --> 00:55:45,440
just seen the generation of the element

1503
00:55:49,829 --> 00:55:48,240
gold how do we know that um and then

1504
00:55:51,829 --> 00:55:49,839
there are also questions about you know

1505
00:55:54,549 --> 00:55:51,839
how do we know for example how far away

1506
00:55:56,630 --> 00:55:54,559
a galaxy is or how fast the expansion of

1507
00:55:58,309 --> 00:55:56,640
the universe is taking something away

1508
00:56:01,270 --> 00:55:58,319
and all of that goes down to this

1509
00:56:03,910 --> 00:56:01,280
technique called spectroscopy so um very

1510
00:56:05,589 --> 00:56:03,920
simply put spectroscopy is separating

1511
00:56:07,109 --> 00:56:05,599
light out into a rainbow that that's

1512
00:56:09,030 --> 00:56:07,119
really all it is

1513
00:56:11,589 --> 00:56:09,040
but the amazing thing is is that

1514
00:56:13,750 --> 00:56:11,599
scientists can then analyze very very

1515
00:56:15,670 --> 00:56:13,760
carefully how much light is coming in

1516
00:56:17,510 --> 00:56:15,680
each color and the the graphic that

1517
00:56:20,069 --> 00:56:17,520
you're looking at shows you

1518
00:56:22,549 --> 00:56:20,079
so this is a light from a uh in this

1519
00:56:24,309 --> 00:56:22,559
case from a star that has a planet

1520
00:56:27,109 --> 00:56:24,319
around it the idea is that there is an

1521
00:56:29,190 --> 00:56:27,119
exoplanet planet around another star

1522
00:56:31,430 --> 00:56:29,200
and the uh the one of the incredible

1523
00:56:33,589 --> 00:56:31,440
science goals of web is to be able to

1524
00:56:36,069 --> 00:56:33,599
analyze the atmospheres of planets

1525
00:56:37,990 --> 00:56:36,079
around other stars and if you if you can

1526
00:56:39,750 --> 00:56:38,000
pass the light that's shining through

1527
00:56:41,589 --> 00:56:39,760
the atmosphere of a planet so the

1528
00:56:43,990 --> 00:56:41,599
starlight is shining through the

1529
00:56:45,670 --> 00:56:44,000
atmosphere of a planet around it as the

1530
00:56:47,190 --> 00:56:45,680
planet goes through basically a little

1531
00:56:49,510 --> 00:56:47,200
eclipse it's actually in front of the

1532
00:56:52,230 --> 00:56:49,520
star and then you take that light and

1533
00:56:54,470 --> 00:56:52,240
you separate it out into a rainbow and

1534
00:56:56,230 --> 00:56:54,480
we see here the graphic so this is a

1535
00:56:58,150 --> 00:56:56,240
planet you can see that little dark disk

1536
00:56:59,510 --> 00:56:58,160
represents a planet that's going in

1537
00:57:01,910 --> 00:56:59,520
front of a star

1538
00:57:03,910 --> 00:57:01,920
and the planet has an atmosphere there

1539
00:57:06,069 --> 00:57:03,920
are different layers of the atmosphere

1540
00:57:06,950 --> 00:57:06,079
here in different colors green purple

1541
00:57:11,430 --> 00:57:06,960
and

1542
00:57:13,910 --> 00:57:11,440
star behind the planet shines through

1543
00:57:15,990 --> 00:57:13,920
that atmosphere then we get some amazing

1544
00:57:18,870 --> 00:57:16,000
observations about what the atmosphere

1545
00:57:20,150 --> 00:57:18,880
is made of and if i could go to the the

1546
00:57:21,270 --> 00:57:20,160
graphic that we were looking at just a

1547
00:57:23,910 --> 00:57:21,280
minute ago

1548
00:57:26,470 --> 00:57:23,920
when you actually take that rainbow of

1549
00:57:28,950 --> 00:57:26,480
light and you measure the the the very

1550
00:57:31,510 --> 00:57:28,960
jagged kind of squiggly uh blue line you

1551
00:57:33,510 --> 00:57:31,520
see there is simply a graph of how much

1552
00:57:35,030 --> 00:57:33,520
light is coming in each color

1553
00:57:37,270 --> 00:57:35,040
and the incredible thing is that

1554
00:57:40,789 --> 00:57:37,280
different atoms and molecules so for

1555
00:57:42,870 --> 00:57:40,799
example oxygen or the molecule o2 which

1556
00:57:45,430 --> 00:57:42,880
is how oxygen usually appears in an

1557
00:57:49,109 --> 00:57:45,440
atmosphere or say nitrogen or carbon

1558
00:57:52,230 --> 00:57:49,119
dioxide important molecules water vapor

1559
00:57:54,549 --> 00:57:52,240
we can actually detect those molecules

1560
00:57:57,030 --> 00:57:54,559
because every atom and every molecule

1561
00:57:59,349 --> 00:57:57,040
will absorb light slightly differently

1562
00:58:01,109 --> 00:57:59,359
and if we can measure very carefully how

1563
00:58:02,950 --> 00:58:01,119
much light is coming in each color we

1564
00:58:04,950 --> 00:58:02,960
can actually see the presence of

1565
00:58:07,670 --> 00:58:04,960
molecules that are absorbing different

1566
00:58:09,750 --> 00:58:07,680
color bands of light and so here you see

1567
00:58:11,510 --> 00:58:09,760
an atmosphere where it's possible that

1568
00:58:14,390 --> 00:58:11,520
we can actually detect if there's oxygen

1569
00:58:16,549 --> 00:58:14,400
in the atmosphere or ozone which is o3

1570
00:58:19,829 --> 00:58:16,559
three oxygen atoms water vapor carbon

1571
00:58:21,349 --> 00:58:19,839
dioxide and um one thing that that web

1572
00:58:23,510 --> 00:58:21,359
may or may not be able to do this is

1573
00:58:24,870 --> 00:58:23,520
this is certainly very ambitious is it

1574
00:58:28,630 --> 00:58:24,880
might be able to detect things called

1575
00:58:30,230 --> 00:58:28,640
bio markers and those are uh

1576
00:58:32,390 --> 00:58:30,240
basically

1577
00:58:34,710 --> 00:58:32,400
fingerprints in the spectrum that could

1578
00:58:36,470 --> 00:58:34,720
be related to the presence of life

1579
00:58:38,789 --> 00:58:36,480
the the main science goal of course is

1580
00:58:40,230 --> 00:58:38,799
to find environments that might be

1581
00:58:41,829 --> 00:58:40,240
earth-like they might be friendly to

1582
00:58:44,390 --> 00:58:41,839
life but you see something there called

1583
00:58:47,030 --> 00:58:44,400
the vegetation jump and uh that actually

1584
00:58:49,190 --> 00:58:47,040
may be present due to uh plant life

1585
00:58:50,549 --> 00:58:49,200
absorbing certain life and again you

1586
00:58:51,829 --> 00:58:50,559
know while we don't know that this will

1587
00:58:53,109 --> 00:58:51,839
be possible you know the main thing that

1588
00:58:54,950 --> 00:58:53,119
we're looking for are environments

1589
00:58:56,710 --> 00:58:54,960
friendly to life there is a small

1590
00:58:58,549 --> 00:58:56,720
possibility that we could actually look

1591
00:59:00,789 --> 00:58:58,559
at an exoplanet and see something that

1592
00:59:02,470 --> 00:59:00,799
indicated a possible likelihood of life

1593
00:59:03,910 --> 00:59:02,480
there so that's that's something that's

1594
00:59:05,589 --> 00:59:03,920
that's very exciting for us so that's

1595
00:59:07,589 --> 00:59:05,599
about spectroscopy

1596
00:59:09,430 --> 00:59:07,599
so yeah these are all you know

1597
00:59:10,789 --> 00:59:09,440
incredibly powerful techniques that

1598
00:59:12,789 --> 00:59:10,799
we're looking forward to doing in the

1599
00:59:15,109 --> 00:59:12,799
infrared infrared turns out to be the

1600
00:59:17,030 --> 00:59:15,119
best place to do these a lot of the most

1601
00:59:19,270 --> 00:59:17,040
important molecules for life have very

1602
00:59:21,589 --> 00:59:19,280
important absorption bands they absorb

1603
00:59:23,270 --> 00:59:21,599
light in the infrared and so that's

1604
00:59:24,870 --> 00:59:23,280
another incredible use of infrared

1605
00:59:26,710 --> 00:59:24,880
astronomy

1606
00:59:28,309 --> 00:59:26,720
so um just for those of you that are

1607
00:59:30,710 --> 00:59:28,319
joining us uh you are now looking up

1608
00:59:33,109 --> 00:59:30,720
here we see an animation of some of the

1609
00:59:34,710 --> 00:59:33,119
very important molecules for life and as

1610
00:59:36,150 --> 00:59:34,720
we mentioned before as a planet goes

1611
00:59:38,630 --> 00:59:36,160
around a star

1612
00:59:41,030 --> 00:59:38,640
some of that star light shines through

1613
00:59:42,950 --> 00:59:41,040
the atmosphere of the planet itself and

1614
00:59:44,710 --> 00:59:42,960
when that happens we can look very

1615
00:59:47,910 --> 00:59:44,720
carefully at the different colors that

1616
00:59:50,230 --> 00:59:47,920
are absorbed uh and we actually find out

1617
00:59:52,150 --> 00:59:50,240
what chemistry is in that atmosphere

1618
00:59:53,430 --> 00:59:52,160
itself so you see that that

1619
00:59:54,789 --> 00:59:53,440
the starlight shining through the

1620
00:59:57,030 --> 00:59:54,799
atmosphere of a planet around another

1621
00:59:58,630 --> 00:59:57,040
star and eventually ending up inside the

1622
01:00:00,710 --> 00:59:58,640
james webb space telescope and we'll be

1623
01:00:02,549 --> 01:00:00,720
able to analyze it from there

1624
01:00:04,390 --> 01:00:02,559
so for those of you that are joining us

1625
01:00:05,670 --> 01:00:04,400
uh you are looking at live coverage of

1626
01:00:08,069 --> 01:00:05,680
the commissioning of the james webb

1627
01:00:09,349 --> 01:00:08,079
space telescope today is an exciting day

1628
01:00:11,430 --> 01:00:09,359
because we were looking we're looking at

1629
01:00:14,150 --> 01:00:11,440
the completion of the uh the

1630
01:00:16,309 --> 01:00:14,160
commissioning the unfolding and and in

1631
01:00:18,390 --> 01:00:16,319
just a little while the tensioning of

1632
01:00:20,309 --> 01:00:18,400
the very last bit of the james webb

1633
01:00:21,990 --> 01:00:20,319
space telescope heat shield

1634
01:00:24,309 --> 01:00:22,000
um i think that actually it might be a

1635
01:00:26,950 --> 01:00:24,319
nice time to uh to go to our our social

1636
01:00:28,950 --> 01:00:26,960
media feed because uh we bet we will be

1637
01:00:30,069 --> 01:00:28,960
able to take some of your questions live

1638
01:00:32,789 --> 01:00:30,079
uh for those of you that would like to

1639
01:00:34,150 --> 01:00:32,799
do this you can use the hashtag asknasa

1640
01:00:36,870 --> 01:00:34,160
and i have been receiving some of the

1641
01:00:38,870 --> 01:00:36,880
social media questions right now so uh

1642
01:00:40,789 --> 01:00:38,880
so keith as we look in here at the live

1643
01:00:42,390 --> 01:00:40,799
footage of the mission operations center

1644
01:00:44,309 --> 01:00:42,400
at the johns hopkins university

1645
01:00:46,309 --> 01:00:44,319
the space telescope science institute

1646
01:00:48,390 --> 01:00:46,319
maybe you and i can take a bit of a hack

1647
01:00:49,589 --> 01:00:48,400
at some of these uh uh social media

1648
01:00:51,670 --> 01:00:49,599
questions

1649
01:00:53,589 --> 01:00:51,680
the the first one comes from one of our

1650
01:00:55,510 --> 01:00:53,599
users on twitter that says will the

1651
01:00:57,670 --> 01:00:55,520
telescope need periodic tensioning

1652
01:00:59,829 --> 01:00:57,680
during its lifetime or is this a one-off

1653
01:01:00,710 --> 01:00:59,839
thing so so keith could you answer that

1654
01:01:02,710 --> 01:01:00,720
question is this something that we're

1655
01:01:04,150 --> 01:01:02,720
going to do again or is this just the

1656
01:01:05,670 --> 01:01:04,160
one time we ever tensioned this heat

1657
01:01:09,349 --> 01:01:05,680
shield

1658
01:01:10,630 --> 01:01:09,359
um no we do not plan to ever retention

1659
01:01:13,670 --> 01:01:10,640
uh

1660
01:01:15,990 --> 01:01:13,680
and that was that was a chosen thing to

1661
01:01:17,829 --> 01:01:16,000
do in the design so all the materials

1662
01:01:18,870 --> 01:01:17,839
everything about the analysis of the

1663
01:01:19,670 --> 01:01:18,880
design

1664
01:01:21,430 --> 01:01:19,680
uh

1665
01:01:24,390 --> 01:01:21,440
has shown that we don't we don't need to

1666
01:01:27,430 --> 01:01:24,400
do that so uh uh everything will wear

1667
01:01:30,309 --> 01:01:27,440
but but we have uh our our layers are

1668
01:01:32,069 --> 01:01:30,319
actually tensioned on springs

1669
01:01:34,309 --> 01:01:32,079
over its lifetime those springs will

1670
01:01:37,270 --> 01:01:34,319
sort of take out any of those uh those

1671
01:01:42,710 --> 01:01:40,069
let's see we have a question um

1672
01:01:44,789 --> 01:01:42,720
uh that somebody from bob on twitter is

1673
01:01:46,630 --> 01:01:44,799
saying um how do you keep the sun shield

1674
01:01:49,109 --> 01:01:46,640
in the correct orientation does it

1675
01:01:50,789 --> 01:01:49,119
require constant adjustments over time

1676
01:01:52,549 --> 01:01:50,799
or is the orbit set and it stays in the

1677
01:01:54,950 --> 01:01:52,559
correct position forever

1678
01:01:57,829 --> 01:01:54,960
so that's a question about unfolding the

1679
01:02:00,470 --> 01:01:57,839
telescope yes yeah it's it's yeah it's

1680
01:02:02,710 --> 01:02:00,480
it's locked in position uh we if this is

1681
01:02:05,349 --> 01:02:02,720
its final position it'll stay in that

1682
01:02:07,750 --> 01:02:05,359
again everything is designed to uh

1683
01:02:09,109 --> 01:02:07,760
be a little flexible uh as temperature

1684
01:02:10,549 --> 01:02:09,119
changes

1685
01:02:17,510 --> 01:02:10,559
uh

1686
01:02:19,910 --> 01:02:17,520
vary but it's all gone

1687
01:02:22,150 --> 01:02:19,920
all patients this is mama on ops let me

1688
01:02:24,069 --> 01:02:22,160
just give you a quick status of where

1689
01:02:26,630 --> 01:02:24,079
we're at

1690
01:02:29,430 --> 01:02:26,640
you can see we've completed car 622

1691
01:02:32,069 --> 01:02:29,440
player 4 and that call was made earlier

1692
01:02:34,230 --> 01:02:32,079
before we get into layer 5 on car 626

1693
01:02:36,230 --> 01:02:34,240
we're going to go ahead and reassess our

1694
01:02:37,990 --> 01:02:36,240
our uh our communications with our

1695
01:02:39,910 --> 01:02:38,000
medium gain antenna

1696
01:02:41,990 --> 01:02:39,920
and uh and our signal strength there so

1697
01:02:43,510 --> 01:02:42,000
once we evaluate that and see if we need

1698
01:02:45,910 --> 01:02:43,520
to repoint the dish

1699
01:02:48,230 --> 01:02:45,920
or continue on uh we'll take either of

1700
01:02:49,270 --> 01:02:48,240
those actions before we proceed so

1701
01:02:50,470 --> 01:02:49,280
that's where we'll stay for just a

1702
01:02:52,950 --> 01:02:50,480
little bit while we let the team in the

1703
01:02:54,789 --> 01:02:52,960
back go ahead and uh do that analysis so

1704
01:02:56,230 --> 01:02:54,799
standby

1705
01:02:58,309 --> 01:02:56,240
okay um

1706
01:03:00,710 --> 01:02:58,319
i think i think you heard our our

1707
01:03:02,309 --> 01:03:00,720
mission ops manager there uh we are

1708
01:03:03,589 --> 01:03:02,319
playing the ops loop right how can i ask

1709
01:03:07,349 --> 01:03:03,599
that

1710
01:03:10,069 --> 01:03:07,359
um yeah so uh we finished layer four um

1711
01:03:11,270 --> 01:03:10,079
uh as you this is live

1712
01:03:13,270 --> 01:03:11,280
you're getting to hear some of the stuff

1713
01:03:14,950 --> 01:03:13,280
that goes on every minute of every day

1714
01:03:17,349 --> 01:03:14,960
uh and one thing we're trying to do is

1715
01:03:18,630 --> 01:03:17,359
make sure our communication coverage is

1716
01:03:21,670 --> 01:03:18,640
good so they're going to take a little

1717
01:03:23,910 --> 01:03:21,680
pause it sounds like uh to to to to do

1718
01:03:25,670 --> 01:03:23,920
that so we can take some more questions

1719
01:03:28,230 --> 01:03:25,680
while they uh get their uh

1720
01:03:31,270 --> 01:03:28,240
communications uh established web is

1721
01:03:32,549 --> 01:03:31,280
communicating right now uh just fine but

1722
01:03:35,910 --> 01:03:32,559
uh they sounds like they want to make

1723
01:03:38,630 --> 01:03:37,190
so we were just talking a little bit

1724
01:03:41,109 --> 01:03:38,640
about the question that we got uh when

1725
01:03:43,109 --> 01:03:41,119
we were when we were getting uh

1726
01:03:45,510 --> 01:03:43,119
uh we were getting an announcement from

1727
01:03:47,109 --> 01:03:45,520
the mock uh the the uh the viewer was

1728
01:03:48,069 --> 01:03:47,119
actually asking about whether there's a

1729
01:03:50,390 --> 01:03:48,079
any sort of correction to the

1730
01:03:52,230 --> 01:03:50,400
orientation needed so i mean but will

1731
01:03:54,150 --> 01:03:52,240
will web have any any sort of engines to

1732
01:03:55,990 --> 01:03:54,160
kind of keep its orientation right

1733
01:03:58,990 --> 01:03:56,000
shield pointing toward the sun

1734
01:04:01,589 --> 01:03:59,000
yeah yeah so we we we move the entire

1735
01:04:03,910 --> 01:04:01,599
observatory when we pull so the

1736
01:04:07,510 --> 01:04:03,920
all of web moves together as one sort of

1737
01:04:10,150 --> 01:04:07,520
rigid body when we uh move move around

1738
01:04:11,750 --> 01:04:10,160
uh to look at things so uh and we and we

1739
01:04:14,390 --> 01:04:11,760
maneuver it with reaction wheels we

1740
01:04:16,309 --> 01:04:14,400
actually spin their six wheels and side

1741
01:04:19,670 --> 01:04:16,319
we spin those wheels up to different

1742
01:04:22,150 --> 01:04:19,680
speeds uh the the torque on those motors

1743
01:04:24,710 --> 01:04:22,160
uh the web will actually spin around

1744
01:04:26,950 --> 01:04:24,720
that so uh you know it's the classic uh

1745
01:04:29,029 --> 01:04:26,960
you know the bicycle wheel and trying to

1746
01:04:30,789 --> 01:04:29,039
turn things up you turn the other way uh

1747
01:04:32,630 --> 01:04:30,799
web has nothing to hold on to so when

1748
01:04:34,549 --> 01:04:32,640
those wheels spin it gets spun the other

1749
01:04:36,390 --> 01:04:34,559
way so really really slowly so we use

1750
01:04:39,029 --> 01:04:36,400
those wheels is actually how we uh

1751
01:04:41,510 --> 01:04:39,039
maneuver and point every once in a while

1752
01:04:44,789 --> 01:04:41,520
we we we do have a

1753
01:04:46,630 --> 01:04:44,799
a propulsion system on ball engines uh

1754
01:04:50,710 --> 01:04:46,640
and they can be fired too for more

1755
01:04:53,910 --> 01:04:51,670
okay

1756
01:04:55,190 --> 01:04:53,920
looking uh see another another answer

1757
01:04:56,150 --> 01:04:55,200
from twitter

1758
01:04:58,789 --> 01:04:56,160
um

1759
01:05:00,470 --> 01:04:58,799
i uh it says is it extremely hot just

1760
01:05:02,069 --> 01:05:00,480
behind the shield and extremely cold

1761
01:05:03,270 --> 01:05:02,079
just in front of the shield and this is

1762
01:05:04,950 --> 01:05:03,280
a question that we talked about a little

1763
01:05:06,789 --> 01:05:04,960
bit earlier in the broadcast but there

1764
01:05:08,549 --> 01:05:06,799
are people that uh that are just joining

1765
01:05:10,630 --> 01:05:08,559
us can you talk a bit about the the

1766
01:05:12,309 --> 01:05:10,640
temperature differential uh between the

1767
01:05:13,829 --> 01:05:12,319
uh the hot side and the cold side of the

1768
01:05:16,390 --> 01:05:13,839
heat shield

1769
01:05:18,470 --> 01:05:16,400
yeah so i yeah so the hot side that that

1770
01:05:20,470 --> 01:05:18,480
sun-facing layer we've done everything

1771
01:05:23,510 --> 01:05:20,480
we can to make it as cool as possible

1772
01:05:25,910 --> 01:05:23,520
but it's still really really hot uh it

1773
01:05:27,270 --> 01:05:25,920
it runs around the temperature of you

1774
01:05:28,950 --> 01:05:27,280
know of

1775
01:05:29,990 --> 01:05:28,960
boiling water

1776
01:05:31,670 --> 01:05:30,000
um

1777
01:05:33,829 --> 01:05:31,680
you can see some of the temperature some

1778
01:05:36,549 --> 01:05:33,839
of the temperatures right there honey we

1779
01:05:39,510 --> 01:05:36,559
roughly say 200 degrees fahrenheit on

1780
01:05:41,750 --> 01:05:39,520
that on that hot side so each layer

1781
01:05:44,150 --> 01:05:41,760
gives us about a hundred year drop

1782
01:05:46,870 --> 01:05:44,160
uh so the cold side layer

1783
01:05:48,230 --> 01:05:46,880
uh it runs about

1784
01:05:50,630 --> 01:05:48,240
uh

1785
01:05:52,870 --> 01:05:50,640
i i we're in celsius or whatever but in

1786
01:05:56,710 --> 01:05:52,880
kelvins uh the warm side is roughly

1787
01:05:58,309 --> 01:05:56,720
about minus 350 degrees fahrenheit uh

1788
01:06:00,309 --> 01:05:58,319
and then that telescope is right around

1789
01:06:02,309 --> 01:06:00,319
minus 400 so that kind of gives you an

1790
01:06:04,549 --> 01:06:02,319
idea that differential check out our

1791
01:06:06,150 --> 01:06:04,559
where is web website and that'll kind of

1792
01:06:09,510 --> 01:06:06,160
give you a flavor for the the

1793
01:06:12,789 --> 01:06:11,510
you were mentioning the where is web uh

1794
01:06:14,309 --> 01:06:12,799
website and that can show you actually

1795
01:06:16,069 --> 01:06:14,319
you know where the observatory is on its

1796
01:06:17,670 --> 01:06:16,079
way out to l2

1797
01:06:19,270 --> 01:06:17,680
and uh um

1798
01:06:21,109 --> 01:06:19,280
one of the things that we actually uh

1799
01:06:22,390 --> 01:06:21,119
mentioned briefly at the beginning of

1800
01:06:24,630 --> 01:06:22,400
the broadcast but we haven't had a

1801
01:06:26,630 --> 01:06:24,640
chance to go into any detail is the fact

1802
01:06:28,309 --> 01:06:26,640
that um there was something happened

1803
01:06:30,710 --> 01:06:28,319
during the launch that was actually very

1804
01:06:33,109 --> 01:06:30,720
uh very fortunate and will extend the

1805
01:06:35,349 --> 01:06:33,119
life of the the observatory we hope uh

1806
01:06:36,950 --> 01:06:35,359
so keith give us a sense about what that

1807
01:06:38,470 --> 01:06:36,960
was what what what happened and what was

1808
01:06:40,309 --> 01:06:38,480
the advantage of it

1809
01:06:43,109 --> 01:06:40,319
yeah so again going all the way back to

1810
01:06:45,990 --> 01:06:43,119
launch day uh the error we asked arion

1811
01:06:48,069 --> 01:06:46,000
give us a velocity uh when they when

1812
01:06:51,349 --> 01:06:48,079
they separated from us in that video so

1813
01:06:53,270 --> 01:06:51,359
we we specified exactly what velocity

1814
01:06:56,390 --> 01:06:53,280
which is speed and direction uh we

1815
01:06:58,470 --> 01:06:56,400
wanted uh from them and uh and and that

1816
01:07:01,990 --> 01:06:58,480
that velocity that we expect from them

1817
01:07:04,549 --> 01:07:02,000
uh is what uh was aiming us towards l2

1818
01:07:06,309 --> 01:07:04,559
uh at the right speed that we needed uh

1819
01:07:08,950 --> 01:07:06,319
however you know there is some small

1820
01:07:11,829 --> 01:07:08,960
errors to that and we don't quite know

1821
01:07:12,630 --> 01:07:11,839
uh how much those errors are so we we

1822
01:07:14,549 --> 01:07:12,640
plan

1823
01:07:16,950 --> 01:07:14,559
and for the worst case

1824
01:07:19,829 --> 01:07:16,960
uh we and and and webb will need to use

1825
01:07:22,789 --> 01:07:19,839
its onboard propulsion system to sort of

1826
01:07:24,549 --> 01:07:22,799
make up that uh so uh um but since we

1827
01:07:26,870 --> 01:07:24,559
got such a good trajectory or good

1828
01:07:28,710 --> 01:07:26,880
performance out of the ariane 5 which we

1829
01:07:31,109 --> 01:07:28,720
which we counted we would given their

1830
01:07:32,710 --> 01:07:31,119
their history of good performance uh we

1831
01:07:35,829 --> 01:07:32,720
didn't use very much we didn't use as

1832
01:07:37,750 --> 01:07:35,839
much fuel as we needed for that first

1833
01:07:38,870 --> 01:07:37,760
correction we had designed everything in

1834
01:07:41,270 --> 01:07:38,880
the system

1835
01:07:43,190 --> 01:07:41,280
if everything goes worst case

1836
01:07:45,270 --> 01:07:43,200
we would still have at least 10 years of

1837
01:07:47,430 --> 01:07:45,280
mission life but basically everything

1838
01:07:50,950 --> 01:07:47,440
went best case uh so we have

1839
01:07:52,870 --> 01:07:50,960
significantly more uh than than 10 years

1840
01:07:55,029 --> 01:07:52,880
we don't have the exact number yet but

1841
01:07:57,910 --> 01:07:55,039
eventually over commissioning as we can

1842
01:07:59,910 --> 01:07:57,920
continue to study our propulsion system

1843
01:08:01,829 --> 01:07:59,920
uh as we continue to learn more about

1844
01:08:03,750 --> 01:08:01,839
how web operates will fine-tune that

1845
01:08:06,069 --> 01:08:03,760
number and and get it out later in

1846
01:08:07,750 --> 01:08:06,079
commissioning uh but uh when the number

1847
01:08:09,349 --> 01:08:07,760
comes out i think everybody will really

1848
01:08:12,309 --> 01:08:09,359
really pleased uh that we're

1849
01:08:13,750 --> 01:08:12,319
significantly uh use less fuel and we're

1850
01:08:15,750 --> 01:08:13,760
going to significantly exceed that

1851
01:08:18,789 --> 01:08:15,760
10-year mission life

1852
01:08:19,990 --> 01:08:18,799
of fuels yeah

1853
01:08:22,229 --> 01:08:20,000
excellent

1854
01:08:23,590 --> 01:08:22,239
all right going back to our social media

1855
01:08:29,349 --> 01:08:23,600
questions here

1856
01:08:34,149 --> 01:08:31,829
so we have a uh somebody named sun frog

1857
01:08:36,390 --> 01:08:34,159
on twitch is saying how much space is

1858
01:08:37,749 --> 01:08:36,400
between the shield layers in in inches

1859
01:08:39,829 --> 01:08:37,759
or feet how far apart are these

1860
01:08:40,789 --> 01:08:39,839
different layers we're looking at yeah

1861
01:08:42,550 --> 01:08:40,799
um

1862
01:08:45,189 --> 01:08:42,560
yeah i don't know if they can roll that

1863
01:08:47,510 --> 01:08:45,199
test roll again uh from from from the

1864
01:08:52,470 --> 01:08:47,520
test that we did i it it's roughly a

1865
01:08:56,709 --> 01:08:54,630
roughly a foot and a half to hold if

1866
01:08:59,269 --> 01:08:56,719
it's about six feet from

1867
01:09:00,709 --> 01:08:59,279
uh one side to the other so uh you know

1868
01:09:03,269 --> 01:09:00,719
depending on where it is it's a little

1869
01:09:06,070 --> 01:09:03,279
bit thinner uh on once you know down

1870
01:09:07,829 --> 01:09:06,080
towards the uh the short side and it's a

1871
01:09:10,870 --> 01:09:07,839
little bit further spread on the fore

1872
01:09:13,110 --> 01:09:10,880
and aft as you see in that obt right now

1873
01:09:15,669 --> 01:09:13,120
um so yeah roughly five to six feet of

1874
01:09:17,030 --> 01:09:15,679
separation uh one foot between each

1875
01:09:19,749 --> 01:09:17,040
layer i don't know what that is maybe

1876
01:09:21,189 --> 01:09:19,759
this this it's not that far apart but

1877
01:09:23,430 --> 01:09:21,199
that's all it takes to provide the

1878
01:09:24,709 --> 01:09:23,440
coolant

1879
01:09:26,229 --> 01:09:24,719
excellent

1880
01:09:29,269 --> 01:09:26,239
all right

1881
01:09:33,510 --> 01:09:31,590
john hague on twitter asks what would

1882
01:09:35,269 --> 01:09:33,520
happen if the sunshield tore while you

1883
01:09:37,030 --> 01:09:35,279
were deploying it is there a backup for

1884
01:09:38,229 --> 01:09:37,040
this it was it probably there were

1885
01:09:39,590 --> 01:09:38,239
actually several different questions

1886
01:09:41,030 --> 01:09:39,600
that we got about this about little

1887
01:09:44,229 --> 01:09:41,040
tears or anything

1888
01:09:46,229 --> 01:09:44,239
yeah yeah uh yeah tears or tears are a

1889
01:09:48,789 --> 01:09:46,239
big concern uh and then again everything

1890
01:09:50,630 --> 01:09:48,799
that's been done as far as the design

1891
01:09:53,030 --> 01:09:50,640
if we do get a tear

1892
01:09:55,189 --> 01:09:53,040
what we want what what concerns us even

1893
01:09:57,270 --> 01:09:55,199
more than a tear is that tear

1894
01:09:58,950 --> 01:09:57,280
propagating throughout the entire sun

1895
01:10:00,950 --> 01:09:58,960
shield so what we have we have a system

1896
01:10:03,270 --> 01:10:00,960
of rip stops incorporated into each

1897
01:10:05,110 --> 01:10:03,280
layer so if we do get any small tears

1898
01:10:07,430 --> 01:10:05,120
it'll only go a short distance and then

1899
01:10:09,669 --> 01:10:07,440
stop as we have reinforcements around so

1900
01:10:11,189 --> 01:10:09,679
that's all been incorporated into design

1901
01:10:12,950 --> 01:10:11,199
and then again everything you're seeing

1902
01:10:15,189 --> 01:10:12,960
about the deployment why it looks like

1903
01:10:16,790 --> 01:10:15,199
it's grass growing is to be slow

1904
01:10:18,229 --> 01:10:16,800
methodical

1905
01:10:22,229 --> 01:10:18,239
so we make sure that we're not putting

1906
01:10:25,590 --> 01:10:23,270
excellent

1907
01:10:27,430 --> 01:10:25,600
um so one of the things that people saw

1908
01:10:28,550 --> 01:10:27,440
when they actually went to the uh the

1909
01:10:30,390 --> 01:10:28,560
website

1910
01:10:32,310 --> 01:10:30,400
where is webb is that the web appears to

1911
01:10:33,990 --> 01:10:32,320
be slowing down right now

1912
01:10:35,669 --> 01:10:34,000
so uh um

1913
01:10:37,990 --> 01:10:35,679
can you give us a sense about why why

1914
01:10:40,790 --> 01:10:38,000
would it seem like web is slowing down

1915
01:10:42,470 --> 01:10:40,800
yeah yeah so really it's uh we

1916
01:10:44,310 --> 01:10:42,480
uh as we leave the earth we're going to

1917
01:10:46,229 --> 01:10:44,320
l2 we're going to that million mile mark

1918
01:10:48,709 --> 01:10:46,239
and then we kind of you know for

1919
01:10:51,590 --> 01:10:48,719
in very simplistic term think about we

1920
01:10:54,550 --> 01:10:51,600
stop uh we don't really stop but uh

1921
01:10:56,790 --> 01:10:54,560
we we with our relative velocity to the

1922
01:10:58,630 --> 01:10:56,800
earth remember as we go around the sun a

1923
01:11:01,189 --> 01:10:58,640
web is going with us and it's always

1924
01:11:03,030 --> 01:11:01,199
maintaining that million mile distance

1925
01:11:05,430 --> 01:11:03,040
so essentially we're stopped with

1926
01:11:06,950 --> 01:11:05,440
respect to the earth so we see we left

1927
01:11:08,709 --> 01:11:06,960
uh we were multiple we were several

1928
01:11:10,070 --> 01:11:08,719
kilometers per second

1929
01:11:11,990 --> 01:11:10,080
in our speed

1930
01:11:13,510 --> 01:11:12,000
when we came off the arion and as we get

1931
01:11:16,070 --> 01:11:13,520
further and further from earth the

1932
01:11:18,149 --> 01:11:16,080
earth's gravity is slowing us down uh

1933
01:11:20,149 --> 01:11:18,159
and we're trying everything is about

1934
01:11:22,470 --> 01:11:20,159
making our speed just right so as we get

1935
01:11:24,950 --> 01:11:22,480
about a million miles away uh we get

1936
01:11:27,270 --> 01:11:24,960
into that l2 orbit so you'll see that

1937
01:11:30,550 --> 01:11:27,280
you'll see that slow down more and more

1938
01:11:32,790 --> 01:11:30,560
as we get closer to uh our l2 uh orbit

1939
01:11:33,830 --> 01:11:32,800
insertions

1940
01:11:35,510 --> 01:11:33,840
thank you

1941
01:11:36,870 --> 01:11:35,520
so i just got the message that we're

1942
01:11:38,149 --> 01:11:36,880
going to take a brief pause on our

1943
01:11:40,470 --> 01:11:38,159
commentary while they look at some

1944
01:11:42,630 --> 01:11:40,480
communication uh up to the telescope

1945
01:11:44,310 --> 01:11:42,640
we will be back and we will be taking

1946
01:11:46,790 --> 01:11:44,320
more of your social media questions you

1947
01:11:48,790 --> 01:11:46,800
can use the hashtag asknasa and i'm

1948
01:11:50,070 --> 01:11:48,800
michelle thaller here with keith parrish

1949
01:11:51,669 --> 01:11:50,080
and you are looking at live

1950
01:11:53,430 --> 01:11:51,679
commissioning of the james webb space

1951
01:11:55,590 --> 01:11:53,440
telescope the final phases of the

1952
01:11:57,510 --> 01:11:55,600
unfolding of the heat shield and we will

1953
01:11:59,110 --> 01:11:57,520
be here throughout the process we'll

1954
01:12:00,470 --> 01:11:59,120
take a brief pause now but we'll be back

1955
01:14:28,310 --> 01:12:00,480
very soon so thank you so much for

1956
01:14:30,730 --> 01:14:29,669
uh

1957
01:14:32,149 --> 01:14:30,740
yeah mom um

1958
01:14:34,630 --> 01:14:32,159
[Music]

1959
01:14:36,870 --> 01:14:34,640
we can talk about that uh later if you

1960
01:15:42,390 --> 01:14:36,880
want but or i can um

1961
01:15:42,400 --> 01:16:15,350
yeah we will execute 12.

1962
01:16:20,550 --> 01:16:16,990
oh see this

1963
01:16:21,669 --> 01:16:20,560
is on us

1964
01:16:24,390 --> 01:16:21,679
yes sir we're going to go ahead and get

1965
01:16:26,070 --> 01:16:24,400
ready for car 626 are you ready

1966
01:16:31,430 --> 01:16:26,080
who will see us go

1967
01:16:35,030 --> 01:16:33,030
yeah msu's ago

1968
01:16:39,590 --> 01:16:35,040
have to go sir you go

1969
01:16:43,270 --> 01:16:41,350
wayfriends go

1970
01:16:45,430 --> 01:16:43,280
up it goes all stations this is mom on

1971
01:16:48,070 --> 01:16:45,440
ops we're go at this time to finish sun

1972
01:16:49,430 --> 01:16:48,080
steel tensioning layer five oh see this

1973
01:16:51,189 --> 01:16:49,440
is mama knox

1974
01:16:52,709 --> 01:16:51,199
let me see

1975
01:16:54,630 --> 01:16:52,719
yes sir you can go ahead and pick up at

1976
01:16:57,430 --> 01:16:54,640
step two of car 626 and you can

1977
01:16:58,950 --> 01:16:57,440
coordinate with dev ops on this loop

1978
01:17:02,149 --> 01:16:58,960
copy that mom

1979
01:17:05,030 --> 01:17:02,159
and oc uh you will be executing steps

1980
01:17:06,950 --> 01:17:05,040
one through twelve twelve inclusive

1981
01:17:09,030 --> 01:17:06,960
uh one through twelve only and then we

1982
01:17:10,870 --> 01:17:09,040
will hold

1983
01:17:13,030 --> 01:17:10,880
copy steps one through twelve including

1984
01:17:14,229 --> 01:17:13,040
twelve

1985
01:17:17,350 --> 01:17:14,239
thank you

1986
01:17:18,790 --> 01:17:17,360
and i see this is depop sign up

1987
01:17:21,590 --> 01:17:18,800
go ahead depops

1988
01:17:24,310 --> 01:17:21,600
yeah so when you're ready we can go um

1989
01:17:26,870 --> 01:17:24,320
pull up 626.002

1990
01:17:29,510 --> 01:17:26,880
due to frame eight

1991
01:17:31,350 --> 01:17:29,520
adapts rock looks good that command line

1992
01:17:35,110 --> 01:17:31,360
looks good you're going to execute

1993
01:18:13,430 --> 01:17:37,189
and your go to continue

1994
01:18:17,750 --> 01:18:15,990
okay i can confirm operations frame

1995
01:18:22,630 --> 01:18:17,760
eight

1996
01:18:29,430 --> 01:18:26,470
um we are below the t temperature 290 so

1997
01:18:35,750 --> 01:18:29,440
we do require self heating

1998
01:18:41,669 --> 01:18:38,870
copy that depops we have cr349

1999
01:18:43,830 --> 01:18:41,679
queued up in the central window now

2000
01:18:45,590 --> 01:18:43,840
um yeah i see that i don't sit on the

2001
01:18:48,950 --> 01:18:45,600
command line though the

2002
01:18:52,149 --> 01:18:50,630
and that command line looks good you're

2003
01:18:55,030 --> 01:18:52,159
good to execute

2004
01:18:59,750 --> 01:18:55,040
executing

2005
01:19:03,990 --> 01:19:01,990
okay stand by while we review the motor

2006
01:19:20,310 --> 01:19:04,000
move parameter

2007
01:19:24,790 --> 01:19:22,630
and oc uh the parameters look good

2008
01:19:26,630 --> 01:19:24,800
you're going to move the plus j2 mid

2009
01:19:33,510 --> 01:19:26,640
boom motor

2010
01:19:38,550 --> 01:19:35,669
and in the yellow window you can queue

2011
01:19:42,709 --> 01:19:40,550
ratchet

2012
01:22:27,830 --> 01:19:42,719
and we will hang out here waiting for

2013
01:22:27,840 --> 01:23:51,830
okay

2014
01:23:51,840 --> 01:27:17,030
huh

2015
01:27:17,040 --> 01:27:20,870
i see this is step up on up

2016
01:27:25,350 --> 01:27:23,350
oc go ahead

2017
01:27:29,189 --> 01:27:25,360
okay at this time you are going to

2018
01:27:30,950 --> 01:27:29,199
execute the du stop deploy at step five

2019
01:27:34,790 --> 01:27:30,960
uh command line looks good you go to

2020
01:27:57,990 --> 01:27:36,629
and you're going to continue

2021
01:28:02,470 --> 01:28:00,870
okay i can confirm motor stop

2022
01:28:08,229 --> 01:28:02,480
and then we are going to execute the

2023
01:28:13,750 --> 01:28:09,750
and that command line looks good you're

2024
01:28:19,750 --> 01:28:17,830
and you're going to continue happy gap

2025
01:28:36,470 --> 01:28:19,760
stand by while we review our motor move

2026
01:28:40,390 --> 01:28:39,270
and oc your go to move the plus j2 mid

2027
01:29:04,950 --> 01:28:40,400
boom motor

2028
01:29:04,960 --> 01:32:31,430
and diameter move status with moving

2029
01:34:42,629 --> 01:32:33,270
project science tomorrowland office and

2030
01:34:49,430 --> 01:34:45,510
step lead on off deployment status

2031
01:34:53,750 --> 01:34:49,440
update i can confirm the plus j2 latch

2032
01:35:03,430 --> 01:34:55,510
thank you dev ops that's good news good

2033
01:35:07,189 --> 01:35:05,590
oh see this is step up

2034
01:35:09,590 --> 01:35:07,199
you are going to

2035
01:35:13,430 --> 01:35:09,600
execute du stop deploy

2036
01:35:13,440 --> 01:35:33,669
and you're going to continue copy go

2037
01:35:36,870 --> 01:35:35,270
you're watching live coverage of the

2038
01:35:39,270 --> 01:35:36,880
historic event of commissioning the

2039
01:35:41,189 --> 01:35:39,280
james webb space telescope today we are

2040
01:35:44,070 --> 01:35:41,199
looking to actually finalize the

2041
01:35:45,590 --> 01:35:44,080
tensioning of the amazing heat shield

2042
01:35:47,590 --> 01:35:45,600
the uh the fifth layer of the heat

2043
01:35:49,590 --> 01:35:47,600
shield has begun tensioning

2044
01:35:51,030 --> 01:35:49,600
and uh we are going to be continuing

2045
01:35:53,270 --> 01:35:51,040
continuing with you here through this

2046
01:35:58,070 --> 01:35:53,280
amazing event our live coverage and

2047
01:36:02,550 --> 01:36:00,149
so please submit your social media

2048
01:36:04,709 --> 01:36:02,560
questions using the hashtag asknasa and

2049
01:36:07,030 --> 01:36:04,719
at 11 30 a.m eastern time we will begin

2050
01:36:09,109 --> 01:36:07,040
our live commentary again week the other

2051
01:36:10,950 --> 01:36:09,119
the the fifth

2052
01:36:12,870 --> 01:36:10,960
the fifth layer of the heat shield is

2053
01:36:14,229 --> 01:36:12,880
currently being depleted

2054
01:36:16,070 --> 01:36:14,239
being tensioned so

2055
01:36:17,350 --> 01:36:16,080
everything is going well we'll see you

2056
01:36:18,629 --> 01:36:17,360
in just a few minutes and you're going

2057
01:36:22,550 --> 01:36:18,639
to continue

2058
01:36:25,750 --> 01:36:24,470
and by while we review our motor move

2059
01:36:51,189 --> 01:36:25,760
parameters

2060
01:36:55,189 --> 01:36:53,590
and oc you're going to move the minus j2

2061
01:37:04,629 --> 01:36:55,199
mid boom motor

2062
01:37:15,910 --> 01:37:07,430
and then oh so you can queue up the stop

2063
01:37:21,590 --> 01:37:18,709
and the minus j2 mid boom motor

2064
01:37:23,270 --> 01:37:21,600
status was moving and it's gone to hold

2065
01:37:26,310 --> 01:37:23,280
we are going to

2066
01:37:27,750 --> 01:37:26,320
stay here until we reach

2067
01:41:04,470 --> 01:37:27,760
approximately

2068
01:41:09,510 --> 01:41:07,189
okay and oc we can execute the d e stop

2069
01:41:12,950 --> 01:41:09,520
deploy at this time

2070
01:41:33,590 --> 01:41:15,350
execute

2071
01:41:36,950 --> 01:41:35,510
and i can confirm the meter stopped and

2072
01:41:42,470 --> 01:41:36,960
we're going to

2073
01:41:47,350 --> 01:41:44,070
and that command line looks good you're

2074
01:41:49,590 --> 01:41:47,360
going to execute execute

2075
01:41:52,310 --> 01:41:49,600
and you'll go to continue copy go to

2076
01:42:10,310 --> 01:41:54,070
standby for review

2077
01:42:33,830 --> 01:42:12,550
and oc you're going to move the minus j2

2078
01:42:33,840 --> 01:42:56,550
and the motor status is moving

2079
01:43:01,109 --> 01:42:59,189
oh and oc you can cue up the stop

2080
01:45:10,390 --> 01:43:01,119
command in step 12

2081
01:45:15,990 --> 01:45:12,310
project science this is mom on ops

2082
01:47:53,910 --> 01:45:16,000
report to the flight control room please

2083
01:48:17,350 --> 01:47:58,030
set bleed on off i can confirm the minus

2084
01:48:23,910 --> 01:48:20,629
and oc this is step up on ops you are

2085
01:48:26,470 --> 01:48:23,920
going to execute the deu stop deploy

2086
01:48:50,149 --> 01:48:26,480
it's kidding

2087
01:48:53,830 --> 01:48:51,990
okay and i can confirm that the motor

2088
01:48:57,030 --> 01:48:53,840
move is stopped we're ready to continue

2089
01:48:59,430 --> 01:48:57,040
with 626.013

2090
01:49:01,030 --> 01:48:59,440
uh du to operate frame zero

2091
01:49:05,430 --> 01:49:01,040
command line looks good you're going to

2092
01:49:05,440 --> 01:49:37,669
and you're going to continue now begin

2093
01:49:42,030 --> 01:49:40,550
okay i can confirm operations frame zero

2094
01:49:45,030 --> 01:49:42,040
and if step

2095
01:49:50,070 --> 01:49:45,040
626.014 depth lead has confirmed the

2096
01:49:55,589 --> 01:49:53,830
and we're ready for 66.015.

2097
01:49:56,870 --> 01:49:55,599
the command line looks good you're going

2098
01:49:59,510 --> 01:49:56,880
to execute

2099
01:50:04,870 --> 01:50:01,830
and you're going to continue copy go to

2100
01:50:08,149 --> 01:50:06,950
and standby while we review motor move

2101
01:50:20,310 --> 01:50:08,159
parameters

2102
01:50:46,149 --> 01:50:22,229
and oc you are going to move the ford

2103
01:50:53,430 --> 01:50:49,589
and the motor status is moving

2104
01:55:56,310 --> 01:50:53,440
and oc you can queue up the stop command

2105
01:55:56,320 --> 01:56:06,070
i'm here

2106
01:56:09,270 --> 01:56:07,669
hello you are watching the live

2107
01:56:11,510 --> 01:56:09,280
commissioning of the james webb space

2108
01:56:13,030 --> 01:56:11,520
telescope today we have the exciting

2109
01:56:15,589 --> 01:56:13,040
news to bring you that we are going we

2110
01:56:17,750 --> 01:56:15,599
are looking to finish the uh unfolding

2111
01:56:19,270 --> 01:56:17,760
and tensioning of the heat shield and

2112
01:56:21,189 --> 01:56:19,280
and right now they are working on the

2113
01:56:24,070 --> 01:56:21,199
final layer the fifth layer of the heat

2114
01:56:25,669 --> 01:56:24,080
shield and i'm i'm michelle faller i'm

2115
01:56:26,550 --> 01:56:25,679
an astronomer at goddard space flight

2116
01:56:28,790 --> 01:56:26,560
center

2117
01:56:31,510 --> 01:56:28,800
and uh i'm working from my home today

2118
01:56:33,589 --> 01:56:31,520
because of the coveted pandemic so i ask

2119
01:56:35,109 --> 01:56:33,599
that you all uh give us some patience

2120
01:56:37,109 --> 01:56:35,119
with this broadcast we want to make sure

2121
01:56:38,870 --> 01:56:37,119
that people have a chance to see live

2122
01:56:41,589 --> 01:56:38,880
this this this wonderful and historic

2123
01:56:43,830 --> 01:56:41,599
event and i'm joined by keith parish

2124
01:56:45,990 --> 01:56:43,840
keith is actually right now live at the

2125
01:56:48,149 --> 01:56:46,000
space telescope science institute at the

2126
01:56:50,149 --> 01:56:48,159
johns hopkins university in baltimore

2127
01:56:51,990 --> 01:56:50,159
and above us you can see live footage of

2128
01:56:53,990 --> 01:56:52,000
the mock or the mission operations

2129
01:56:56,310 --> 01:56:54,000
center and this is where people are

2130
01:56:58,390 --> 01:56:56,320
working on the heat shield right now so

2131
01:57:00,070 --> 01:56:58,400
um keith we took a brief pause in our

2132
01:57:02,709 --> 01:57:00,080
commentary uh could you bring us up to

2133
01:57:05,109 --> 01:57:02,719
date what is going on right now with the

2134
01:57:08,149 --> 01:57:05,119
james webb space television

2135
01:57:10,390 --> 01:57:08,159
yeah we uh took a a short pause uh we're

2136
01:57:12,229 --> 01:57:10,400
currently uh in community currently all

2137
01:57:14,070 --> 01:57:12,239
of our data coming down from web is

2138
01:57:16,310 --> 01:57:14,080
coming through our canberra ground

2139
01:57:18,229 --> 01:57:16,320
station on australia so shout out to our

2140
01:57:19,510 --> 01:57:18,239
canberra folks down there uh we're

2141
01:57:21,589 --> 01:57:19,520
currently in communication with them

2142
01:57:23,350 --> 01:57:21,599
we'll be in there uh

2143
01:57:26,470 --> 01:57:23,360
for another couple hours until we hand

2144
01:57:28,149 --> 01:57:26,480
over to our madrid station in spain so

2145
01:57:29,589 --> 01:57:28,159
we took a little pause our you know we

2146
01:57:32,149 --> 01:57:29,599
always want to make sure we're good to

2147
01:57:33,669 --> 01:57:32,159
go before we go into the next operation

2148
01:57:35,510 --> 01:57:33,679
uh so it took a little pause to make

2149
01:57:37,350 --> 01:57:35,520
sure all of our communication

2150
01:57:40,310 --> 01:57:37,360
with canberra

2151
01:57:43,669 --> 01:57:40,320
solid and and it is so we just resumed

2152
01:57:45,830 --> 01:57:43,679
uh layer five tensioning uh and uh we

2153
01:57:48,470 --> 01:57:45,840
actually have done the uh we have six

2154
01:57:50,229 --> 01:57:48,480
corners to uh tension uh and we've

2155
01:57:52,390 --> 01:57:50,239
tensioned the first two we are actually

2156
01:57:55,750 --> 01:57:52,400
currently uh tensioning what we call the

2157
01:57:57,669 --> 01:57:55,760
four the the the uh the four side uh

2158
01:57:59,589 --> 01:57:57,679
which you can see up on what we call our

2159
01:58:01,830 --> 01:57:59,599
observatory visualization tool right

2160
01:58:03,750 --> 01:58:01,840
there and you can see just a little bit

2161
01:58:05,510 --> 01:58:03,760
of separation up there at the top as

2162
01:58:08,950 --> 01:58:05,520
that layer spreads

2163
01:58:10,390 --> 01:58:08,960
on those uh on that corner

2164
01:58:13,270 --> 01:58:10,400
and once again for those people that are

2165
01:58:15,030 --> 01:58:13,280
just uh joining us um the uh

2166
01:58:17,189 --> 01:58:15,040
the graphic that you're seeing to the

2167
01:58:19,189 --> 01:58:17,199
the left of your screen is actually

2168
01:58:21,109 --> 01:58:19,199
correct in real time as to what web is

2169
01:58:22,310 --> 01:58:21,119
doing right now and that's based on data

2170
01:58:24,629 --> 01:58:22,320
and telemetry coming down from the

2171
01:58:26,390 --> 01:58:24,639
telescope is that correct

2172
01:58:28,470 --> 01:58:26,400
yeah that's right so all that all that

2173
01:58:31,589 --> 01:58:28,480
information is coming down from from web

2174
01:58:33,350 --> 01:58:31,599
right now uh our team that created this

2175
01:58:36,149 --> 01:58:33,360
uh what we call the ovt that's our

2176
01:58:38,470 --> 01:58:36,159
acronym for it uh it takes all that data

2177
01:58:41,030 --> 01:58:38,480
and it creates this uh visualization of

2178
01:58:43,189 --> 01:58:41,040
what's going on on web and it's uh

2179
01:58:45,430 --> 01:58:43,199
it really kind of gives us a connection

2180
01:58:47,990 --> 01:58:45,440
uh to web and is what it's doing we know

2181
01:58:49,750 --> 01:58:48,000
this isn't a live a live shot of web but

2182
01:58:51,910 --> 01:58:49,760
it really does give us sort of that

2183
01:58:54,390 --> 01:58:51,920
spatial awareness uh that that the

2184
01:58:56,709 --> 01:58:54,400
engineers need again we're it's really

2185
01:58:58,629 --> 01:58:56,719
about the data the ones and the zeros

2186
01:59:00,149 --> 01:58:58,639
and all the all the telemetry that's

2187
01:59:01,589 --> 01:59:00,159
coming down and we have thousands and

2188
01:59:03,109 --> 01:59:01,599
thousands of

2189
01:59:05,750 --> 01:59:03,119
data points coming down so we take all

2190
01:59:08,390 --> 01:59:05,760
that data and uh we make these images uh

2191
01:59:10,629 --> 01:59:08,400
to tell us exactly what physical uh

2192
01:59:13,189 --> 01:59:10,639
configuration that that web is in right

2193
01:59:17,910 --> 01:59:15,109
and you can see on the you can kind of

2194
01:59:19,589 --> 01:59:17,920
see as you go down to the to the to the

2195
01:59:21,109 --> 01:59:19,599
i do i have i don't know i do have my

2196
01:59:24,149 --> 01:59:21,119
model here i don't know if i can throw

2197
01:59:26,550 --> 01:59:24,159
it um so what we are doing right now is

2198
01:59:29,750 --> 01:59:26,560
we're tensioning up on this side right

2199
01:59:31,750 --> 01:59:29,760
here uh you kind of see a little bit uh

2200
01:59:34,390 --> 01:59:31,760
at this front corner here we've already

2201
01:59:35,750 --> 01:59:34,400
done uh the physical just a note just a

2202
01:59:39,189 --> 01:59:35,760
note to the directors of the broadcast

2203
01:59:40,629 --> 01:59:39,199
uh could we get a picture of keith

2204
01:59:45,430 --> 01:59:40,639
oh i'm sorry i'm pointing to something

2205
01:59:49,189 --> 01:59:47,030
can we uh can we get keith back on

2206
01:59:51,350 --> 01:59:49,199
camera thank you there you go there you

2207
01:59:54,229 --> 01:59:51,360
are um

2208
01:59:55,750 --> 01:59:54,239
big too okay uh yeah so uh this is a

2209
01:59:57,510 --> 01:59:55,760
model of our and i gotta get it right

2210
01:59:59,589 --> 01:59:57,520
here so we're actually

2211
02:00:01,669 --> 01:59:59,599
we're actually tensioning up right now

2212
02:00:03,990 --> 02:00:01,679
you can see on an ovt when when i'm not

2213
02:00:05,990 --> 02:00:04,000
on camera you can see uh this is what we

2214
02:00:07,750 --> 02:00:06,000
call our forward uh part of our

2215
02:00:09,589 --> 02:00:07,760
sunshield and we're tensioning layer

2216
02:00:11,910 --> 02:00:09,599
five right there

2217
02:00:13,910 --> 02:00:11,920
if you swing around this way we've

2218
02:00:15,990 --> 02:00:13,920
already done these two we've already

2219
02:00:18,310 --> 02:00:16,000
done this side and we've already done

2220
02:00:20,149 --> 02:00:18,320
this side so right now we're on uh four

2221
02:00:23,350 --> 02:00:20,159
and then we'll eventually do our

2222
02:00:24,229 --> 02:00:23,360
our uh aft this is our aft side we'll do

2223
02:00:26,310 --> 02:00:24,239
that

2224
02:00:28,709 --> 02:00:26,320
and right after we finish our four so

2225
02:00:31,510 --> 02:00:28,719
yeah we are we're running out of cables

2226
02:00:34,390 --> 02:00:31,520
to wind up uh we started out yesterday

2227
02:00:37,990 --> 02:00:34,400
moving 90 cables uh and right now we're

2228
02:00:39,990 --> 02:00:38,000
down to our our last 18 cable so uh the

2229
02:00:41,350 --> 02:00:40,000
team has been winding those up for and

2230
02:00:43,910 --> 02:00:41,360
that and that's what actually creates

2231
02:00:45,109 --> 02:00:43,920
that tension on the sunshield

2232
02:00:46,950 --> 02:00:45,119
you know we've gotten some questions

2233
02:00:48,629 --> 02:00:46,960
from social media and uh remember that

2234
02:00:50,790 --> 02:00:48,639
you can use the hashtag ask nasa if

2235
02:00:52,070 --> 02:00:50,800
you'd like to ask some questions live

2236
02:00:53,990 --> 02:00:52,080
and there's a there's a couple actually

2237
02:00:56,629 --> 02:00:54,000
that talk about the shape of the the sun

2238
02:00:58,470 --> 02:00:56,639
shield so there's uh you know

2239
02:01:00,870 --> 02:00:58,480
what what what why was this shape

2240
02:01:03,270 --> 02:01:00,880
determined uh the the this person says

2241
02:01:04,870 --> 02:01:03,280
why wasn't it oval shaped or circular

2242
02:01:06,950 --> 02:01:04,880
can you give us a sense about the design

2243
02:01:08,790 --> 02:01:06,960
of the sun shield and and why it looks

2244
02:01:10,709 --> 02:01:08,800
the way it does

2245
02:01:13,109 --> 02:01:10,719
yeah the the sun shield is actually

2246
02:01:14,629 --> 02:01:13,119
shaped uh

2247
02:01:17,350 --> 02:01:14,639
basically

2248
02:01:20,229 --> 02:01:17,360
it's no bigger than it has to be

2249
02:01:21,750 --> 02:01:20,239
uh any any larger uh than it is and that

2250
02:01:24,709 --> 02:01:21,760
would have been even more engineering

2251
02:01:26,229 --> 02:01:24,719
challenges so uh we have requirements on

2252
02:01:29,270 --> 02:01:26,239
how much sky

2253
02:01:31,589 --> 02:01:29,280
uh that the telescope is can see at each

2254
02:01:33,189 --> 02:01:31,599
time and then the uh the shape of the

2255
02:01:35,669 --> 02:01:33,199
telescope uh

2256
02:01:37,830 --> 02:01:35,679
of the or the shape of the sun shield

2257
02:01:40,629 --> 02:01:37,840
lets us pretty much observe

2258
02:01:44,149 --> 02:01:40,639
uh 60 of the sky at any time so we can

2259
02:01:46,629 --> 02:01:44,159
pitch forward uh with respect to the sun

2260
02:01:49,589 --> 02:01:46,639
uh and and and still keep our secondary

2261
02:01:51,669 --> 02:01:49,599
mirror in shadow we can pitch back

2262
02:01:54,310 --> 02:01:51,679
quite a way well over 50 degrees and

2263
02:01:56,470 --> 02:01:54,320
still keep our telescope in shadow so we

2264
02:01:57,430 --> 02:01:56,480
can kind of tilt the telescope back and

2265
02:02:00,390 --> 02:01:57,440
forth

2266
02:02:01,830 --> 02:02:00,400
quite a bit uh front and back now on the

2267
02:02:04,629 --> 02:02:01,840
sides

2268
02:02:06,390 --> 02:02:04,639
we only roll about five degrees each way

2269
02:02:08,870 --> 02:02:06,400
to the side so that's why the tel that's

2270
02:02:09,669 --> 02:02:08,880
why the sun shield has this uh sort of

2271
02:02:11,910 --> 02:02:09,679
uh

2272
02:02:14,070 --> 02:02:11,920
narrow shape on the sides it's 50 some

2273
02:02:16,709 --> 02:02:14,080
feet on the sides and it's 70 some feet

2274
02:02:19,830 --> 02:02:16,719
long on the length and then instead of

2275
02:02:21,589 --> 02:02:19,840
making it uh a square uh or or a

2276
02:02:23,750 --> 02:02:21,599
rectangle we don't we don't need it to

2277
02:02:25,830 --> 02:02:23,760
do that so we we tried to we tried to

2278
02:02:28,229 --> 02:02:25,840
limit as much material as we had to

2279
02:02:31,270 --> 02:02:28,239
handle on orbit uh so that's what gave

2280
02:02:33,910 --> 02:02:31,280
it this sort of uh iconic kite shape uh

2281
02:02:36,470 --> 02:02:33,920
is that it didn't need to be a anything

2282
02:02:37,830 --> 02:02:36,480
other than a kite to provide that uh you

2283
02:02:40,390 --> 02:02:37,840
know provide our telescope with that

2284
02:02:41,510 --> 02:02:40,400
view of the sky at all times

2285
02:02:43,270 --> 02:02:41,520
and i should just say as a shout out

2286
02:02:45,589 --> 02:02:43,280
shout out that was andra on twitter that

2287
02:02:47,109 --> 02:02:45,599
asked that question and then uh as we

2288
02:02:48,709 --> 02:02:47,119
see there's a graphic up here about just

2289
02:02:50,390 --> 02:02:48,719
how much temper differential there is

2290
02:02:51,990 --> 02:02:50,400
between the the hot side and the cold

2291
02:02:55,109 --> 02:02:52,000
side of the heat shield

2292
02:02:57,510 --> 02:02:55,119
um one of our uh one of our social media

2293
02:02:59,750 --> 02:02:57,520
guests asked uh does the observatory

2294
02:03:01,910 --> 02:02:59,760
itself does the mirror itself pan around

2295
02:03:04,790 --> 02:03:01,920
a lot look at the sky

2296
02:03:07,750 --> 02:03:04,800
another deployment status update i can

2297
02:03:11,270 --> 02:03:07,760
confirm the latch event on the forward

2298
02:03:13,589 --> 02:03:11,280
mts pair for layer five

2299
02:03:15,350 --> 02:03:13,599
okay all right good news thank you good

2300
02:03:16,790 --> 02:03:15,360
news

2301
02:03:19,030 --> 02:03:16,800
okay so what you just heard there you

2302
02:03:20,870 --> 02:03:19,040
just heard our depth lead hillary uh she

2303
02:03:23,830 --> 02:03:20,880
just told us that uh we are finished

2304
02:03:26,629 --> 02:03:23,840
with the forward uh so we've done uh

2305
02:03:34,870 --> 02:03:26,639
we've done four of our six corners and i

2306
02:03:40,830 --> 02:03:38,390
so uh back to your question uh or back

2307
02:03:43,990 --> 02:03:40,840
to the question we we maneuver the whole

2308
02:03:46,229 --> 02:03:44,000
observatory uh we don't we don't we

2309
02:03:48,069 --> 02:03:46,239
the whole observatory maneuvers to look

2310
02:03:50,629 --> 02:03:48,079
at you know whatever it's imaging

2311
02:03:53,030 --> 02:03:50,639
whether it be a galaxy or other object

2312
02:04:03,430 --> 02:03:53,040
uh there was early studies that actually

2313
02:04:07,589 --> 02:04:05,589
you'll hear us being interrupted by live

2314
02:04:09,669 --> 02:04:07,599
uh updates from the mock the mission

2315
02:04:10,790 --> 02:04:09,679
operations center so uh don't worry for

2316
02:04:12,229 --> 02:04:10,800
pausing we're listening to what they're

2317
02:04:14,229 --> 02:04:12,239
saying

2318
02:04:17,189 --> 02:04:14,239
yeah exactly right so that's our uh

2319
02:04:19,350 --> 02:04:17,199
that's our uh uh devops engineer nancy

2320
02:04:21,990 --> 02:04:19,360
she's uh communicating again with our

2321
02:04:24,229 --> 02:04:22,000
flight controllers in the room to uh

2322
02:04:26,709 --> 02:04:24,239
communicate what commands that our

2323
02:04:27,990 --> 02:04:26,719
deployments team want to send up to uh

2324
02:04:29,589 --> 02:04:28,000
to web so

2325
02:04:31,030 --> 02:04:29,599
yeah again we just we just maneuver the

2326
02:04:33,589 --> 02:04:31,040
whole observatory it's just better to

2327
02:04:35,990 --> 02:04:33,599
maneuver it make it nice and rigid and

2328
02:04:37,750 --> 02:04:36,000
and solid on orbit and just maneuver

2329
02:04:39,589 --> 02:04:37,760
that versus trying to try to maneuver

2330
02:04:41,189 --> 02:04:39,599
the telescope

2331
02:04:43,430 --> 02:04:41,199
that's again that's what really drove

2332
02:04:45,270 --> 02:04:43,440
that sunshield

2333
02:04:46,709 --> 02:04:45,280
zero one eight i have confirmed that

2334
02:04:47,910 --> 02:04:46,719
death lead and the team are ready to

2335
02:04:50,830 --> 02:04:47,920
continue

2336
02:04:57,830 --> 02:04:53,750
626.019 and that command line looks good

2337
02:05:01,669 --> 02:05:00,310
are you starting to get excited keith

2338
02:05:02,950 --> 02:05:01,679
yeah

2339
02:05:06,390 --> 02:05:02,960
we're just we're actually sending the

2340
02:05:08,310 --> 02:05:06,400
command to start turning those moves

2341
02:05:10,069 --> 02:05:08,320
so let's talk a bit about the importance

2342
02:05:12,229 --> 02:05:10,079
of the sunshield and there there are

2343
02:05:13,830 --> 02:05:12,239
many different aspects of that um this

2344
02:05:15,669 --> 02:05:13,840
really is an exciting piece of

2345
02:05:17,669 --> 02:05:15,679
technology and and you know this is

2346
02:05:19,030 --> 02:05:17,679
something that for a space observatory

2347
02:05:21,189 --> 02:05:19,040
like this we've never tried before can

2348
02:05:23,510 --> 02:05:21,199
you can you give us sort of a pan back

2349
02:05:26,069 --> 02:05:23,520
sort of the 30 000 foot look at and why

2350
02:05:29,030 --> 02:05:26,079
the sun shield is so incredible

2351
02:05:30,390 --> 02:05:29,040
and i see your vitamin d aft mpf motor

2352
02:05:32,950 --> 02:05:30,400
pair

2353
02:05:34,790 --> 02:05:32,960
kathy here we go so uh

2354
02:05:36,550 --> 02:05:34,800
i i do like to let people hear the

2355
02:05:39,510 --> 02:05:36,560
commanding there because it's uh really

2356
02:05:42,790 --> 02:05:41,189
uh you know there's

2357
02:05:45,750 --> 02:05:42,800
there's more than just one command that

2358
02:05:48,149 --> 02:05:45,760
goes up our uh our flight controllers

2359
02:05:49,510 --> 02:05:48,159
and our debt ops lead there they're

2360
02:05:51,109 --> 02:05:49,520
they're they're checking everything

2361
02:05:52,950 --> 02:05:51,119
that's coming back and making sure that

2362
02:05:54,390 --> 02:05:52,960
the next command is is the right command

2363
02:05:56,310 --> 02:05:54,400
so they're double checking and double

2364
02:05:59,270 --> 02:05:56,320
checking so that's a lot of the back and

2365
02:06:01,030 --> 02:05:59,280
forth you hear there uh but uh as you

2366
02:06:02,390 --> 02:06:01,040
can see on the graphic there you'll see

2367
02:06:05,350 --> 02:06:02,400
our motor counter

2368
02:06:07,030 --> 02:06:05,360
status change to moving

2369
02:06:09,350 --> 02:06:07,040
yep there we go so you'll start seeing

2370
02:06:11,350 --> 02:06:09,360
those counts uh that's uh what we call a

2371
02:06:13,270 --> 02:06:11,360
field director which try which keeps

2372
02:06:15,990 --> 02:06:13,280
track of our motor position and you'll

2373
02:06:18,550 --> 02:06:16,000
see those counts starting to uh increase

2374
02:06:21,189 --> 02:06:18,560
as that layer and separate it and those

2375
02:06:22,870 --> 02:06:21,199
cables are or wound in so i think the

2376
02:06:25,750 --> 02:06:22,880
big you know back to your question the

2377
02:06:28,310 --> 02:06:25,760
big the big challenge with with this

2378
02:06:31,270 --> 02:06:28,320
this type of deployment is we're doing

2379
02:06:32,629 --> 02:06:31,280
five layers uh we have to handle five

2380
02:06:34,550 --> 02:06:32,639
layers and

2381
02:06:35,910 --> 02:06:34,560
uh and everything

2382
02:06:38,310 --> 02:06:35,920
it it

2383
02:06:41,109 --> 02:06:38,320
we're pretty good at deploying things

2384
02:06:43,030 --> 02:06:41,119
that are rigid uh but the the membranes

2385
02:06:45,030 --> 02:06:43,040
are rather rather you know they're

2386
02:06:47,189 --> 02:06:45,040
floppy and they they want to float

2387
02:06:49,430 --> 02:06:47,199
around we have cables that we don't want

2388
02:06:51,830 --> 02:06:49,440
to get slack so we're really trying to

2389
02:06:54,709 --> 02:06:51,840
do an intricate operation

2390
02:06:56,310 --> 02:06:54,719
uh right now 560 some thousand miles

2391
02:06:59,030 --> 02:06:56,320
away from the earth

2392
02:07:00,709 --> 02:06:59,040
and control every aspect of the position

2393
02:07:03,030 --> 02:07:00,719
of these layers and i think that's

2394
02:07:03,750 --> 02:07:03,040
really where the challenge has been uh

2395
02:07:08,310 --> 02:07:03,760
is

2396
02:07:10,629 --> 02:07:08,320
every second of the deployment where

2397
02:07:12,950 --> 02:07:10,639
these layers are uh so there's a lot of

2398
02:07:14,390 --> 02:07:12,960
features built in uh that aren't really

2399
02:07:16,149 --> 02:07:14,400
apparent uh

2400
02:07:18,470 --> 02:07:16,159
in any of the things that you're seeing

2401
02:07:20,470 --> 02:07:18,480
right now that keep these layers very

2402
02:07:22,390 --> 02:07:20,480
controlled uh and make sure that they're

2403
02:07:23,990 --> 02:07:22,400
not floating places that we don't want

2404
02:07:25,990 --> 02:07:24,000
them to be and that's that's really been

2405
02:07:27,750 --> 02:07:26,000
the the you know really one of the

2406
02:07:30,390 --> 02:07:27,760
challenges for

2407
02:07:33,589 --> 02:07:30,400
such a large sort of floppy deployable

2408
02:07:34,790 --> 02:07:33,599
item that this sunshield is

2409
02:07:36,709 --> 02:07:34,800
you know speaking of it being kind of

2410
02:07:39,270 --> 02:07:36,719
large and floppy we've gotten several

2411
02:07:41,910 --> 02:07:39,280
questions on social media so um siobhani

2412
02:07:43,750 --> 02:07:41,920
from our youtube feed asks what happens

2413
02:07:45,270 --> 02:07:43,760
if if even one of the sun shields get

2414
02:07:47,910 --> 02:07:45,280
damaged and there are other ones about

2415
02:07:50,470 --> 02:07:47,920
micro meteorites so you know tiny little

2416
02:07:52,310 --> 02:07:50,480
bits of rock flying around in space well

2417
02:07:54,550 --> 02:07:52,320
what's the how resilient does this heat

2418
02:07:56,149 --> 02:07:54,560
shield something like that

2419
02:07:58,149 --> 02:07:56,159
oh it's it's everything from the

2420
02:08:00,790 --> 02:07:58,159
materials that it was that you know sort

2421
02:08:03,430 --> 02:08:00,800
of it's raw materials uh that was chosen

2422
02:08:05,350 --> 02:08:03,440
for its strength uh to be able to handle

2423
02:08:07,350 --> 02:08:05,360
the environment of space that what it's

2424
02:08:08,390 --> 02:08:07,360
coated with to make these uh really you

2425
02:08:11,510 --> 02:08:08,400
know sort of

2426
02:08:13,270 --> 02:08:11,520
uh colors is uh is coded uh is

2427
02:08:15,030 --> 02:08:13,280
everything has been designed it's got

2428
02:08:17,030 --> 02:08:15,040
lots of reinforcements you can see in

2429
02:08:19,990 --> 02:08:17,040
some of these uh this video of the real

2430
02:08:22,069 --> 02:08:20,000
shield now uh you can see a lot of seams

2431
02:08:24,149 --> 02:08:22,079
i do want to give a shout out to our our

2432
02:08:26,069 --> 02:08:24,159
membrane we had a vendor that created

2433
02:08:29,030 --> 02:08:26,079
these membranes and had to stitch them

2434
02:08:31,030 --> 02:08:29,040
all together so to speak uh and and it's

2435
02:08:33,990 --> 02:08:31,040
completely reinforced so that if we do

2436
02:08:36,870 --> 02:08:34,000
get tears uh they won't propagate uh and

2437
02:08:38,709 --> 02:08:36,880
as far as micrometeoroids we do expect

2438
02:08:41,030 --> 02:08:38,719
to be hit with micro meteoroids the good

2439
02:08:43,350 --> 02:08:41,040
thing is that uh they're not very big

2440
02:08:44,790 --> 02:08:43,360
and they won't do much damage so we uh

2441
02:08:46,870 --> 02:08:44,800
we actually one of our early

2442
02:08:49,589 --> 02:08:46,880
developments for this material is we

2443
02:08:52,149 --> 02:08:49,599
actually took it uh and hit it with uh

2444
02:08:54,149 --> 02:08:52,159
high velocity projectiles uh moving

2445
02:08:55,669 --> 02:08:54,159
several kilometers per second to make

2446
02:08:56,950 --> 02:08:55,679
sure that uh make sure the material

2447
02:08:59,109 --> 02:08:56,960
could withstand that so over the

2448
02:09:02,229 --> 02:08:59,119
lifetime we do expect really really tiny

2449
02:09:04,310 --> 02:09:02,239
microscopic holes uh to develop but

2450
02:09:06,790 --> 02:09:04,320
again that's all accounted for in design

2451
02:09:08,870 --> 02:09:06,800
so uh it it it'll it's it's rather

2452
02:09:11,189 --> 02:09:08,880
rugged once it's all tensioned up uh

2453
02:09:12,470 --> 02:09:11,199
it'll it'll be fine

2454
02:09:14,310 --> 02:09:12,480
and uh you were talking about the fact

2455
02:09:16,310 --> 02:09:14,320
that this is this sort of large huge

2456
02:09:18,229 --> 02:09:16,320
sail that we're you know unfolding a

2457
02:09:20,229 --> 02:09:18,239
little bit by a little bit in space and

2458
02:09:21,510 --> 02:09:20,239
of course while there isn't any air or

2459
02:09:23,669 --> 02:09:21,520
atmosphere where webb is there is

2460
02:09:25,270 --> 02:09:23,679
something called the solar wind and the

2461
02:09:26,870 --> 02:09:25,280
solar wind is actually a wind of high

2462
02:09:28,390 --> 02:09:26,880
energy particles that are coming off

2463
02:09:29,990 --> 02:09:28,400
from the sun so not not a wind in the

2464
02:09:31,750 --> 02:09:30,000
way we think of it but a wind of

2465
02:09:33,510 --> 02:09:31,760
actually high energy particles does the

2466
02:09:36,069 --> 02:09:33,520
solar wind have any effect on the heat

2467
02:09:37,430 --> 02:09:36,079
shield and it's appointing

2468
02:09:40,790 --> 02:09:37,440
oh yeah so we get we get something

2469
02:09:41,589 --> 02:09:40,800
called solar pressure uh and again if

2470
02:09:44,390 --> 02:09:41,599
you know

2471
02:09:46,390 --> 02:09:44,400
the whole concept of solar sails uh you

2472
02:09:48,229 --> 02:09:46,400
know to possibly travel around our solar

2473
02:09:50,870 --> 02:09:48,239
system you know with free propulsion

2474
02:09:53,109 --> 02:09:50,880
from the sun uh it's a very small force

2475
02:09:55,750 --> 02:09:53,119
very very tiny it's it's not like the

2476
02:09:57,910 --> 02:09:55,760
wind blowing uh but it is a it is it is

2477
02:10:00,310 --> 02:09:57,920
a force it's a it's a physical force uh

2478
02:10:02,069 --> 02:10:00,320
the sun uh the solar pressure that hits

2479
02:10:04,470 --> 02:10:02,079
the the sun shield so we have to account

2480
02:10:06,629 --> 02:10:04,480
for that uh it will try to move us

2481
02:10:10,229 --> 02:10:06,639
around uh the biggest thing that it does

2482
02:10:12,709 --> 02:10:10,239
to us is it it's offset so uh uh

2483
02:10:15,430 --> 02:10:12,719
what i mean by that is uh the the solar

2484
02:10:18,709 --> 02:10:15,440
pressure will tend to try to turn us uh

2485
02:10:20,390 --> 02:10:18,719
and we counter that churning uh force uh

2486
02:10:23,430 --> 02:10:20,400
with with some reaction wheels in the

2487
02:10:25,350 --> 02:10:23,440
spacecraft and then ultimately uh those

2488
02:10:26,870 --> 02:10:25,360
wheels get spinning so fast we have to

2489
02:10:29,830 --> 02:10:26,880
fire our uh

2490
02:10:33,270 --> 02:10:29,840
onboard propulsion system to unload them

2491
02:10:35,189 --> 02:10:33,280
and that takes fuel to do so uh on uh i

2492
02:10:37,830 --> 02:10:35,199
think early earlier in the week we

2493
02:10:39,750 --> 02:10:37,840
deployed something called our aflap

2494
02:10:41,910 --> 02:10:39,760
off the back of the sunshield

2495
02:10:43,990 --> 02:10:41,920
main structure and that aflap is

2496
02:10:46,149 --> 02:10:44,000
intended to sort of again sort of a

2497
02:10:48,310 --> 02:10:46,159
sailing analogy sort of the counter

2498
02:10:50,229 --> 02:10:48,320
almost like a little bit of a rudder uh

2499
02:10:51,910 --> 02:10:50,239
to help us counter some of those forces

2500
02:10:54,790 --> 02:10:51,920
and ultimately that leads us to using

2501
02:10:55,990 --> 02:10:54,800
less fuel on orbit

2502
02:10:57,669 --> 02:10:56,000
and is the uh

2503
02:10:59,669 --> 02:10:57,679
that's something that is a limitation to

2504
02:11:01,830 --> 02:10:59,679
some degree for this observatory it does

2505
02:11:03,430 --> 02:11:01,840
have a finite amount of fuel to do that

2506
02:11:05,910 --> 02:11:03,440
is is that correct that's that'll be one

2507
02:11:08,149 --> 02:11:05,920
of the lifetime limitations

2508
02:11:10,390 --> 02:11:08,159
that's right so uh you know fuel fuel is

2509
02:11:13,109 --> 02:11:10,400
our only known uh

2510
02:11:15,350 --> 02:11:13,119
limiting life item on board uh so so

2511
02:11:18,390 --> 02:11:15,360
obviously we wanted to take a lot of it

2512
02:11:20,950 --> 02:11:18,400
uh and and we everything worked we worse

2513
02:11:22,550 --> 02:11:20,960
cased everything uh and then we said hey

2514
02:11:25,109 --> 02:11:22,560
how once we worst case all of our

2515
02:11:28,629 --> 02:11:25,119
conditions meaning we don't get a very

2516
02:11:30,470 --> 02:11:28,639
good injection from our arion 5 vehicle

2517
02:11:31,910 --> 02:11:30,480
we do all of our burns late they're not

2518
02:11:33,669 --> 02:11:31,920
very efficient

2519
02:11:35,350 --> 02:11:33,679
we have lots of momentum that we have to

2520
02:11:37,030 --> 02:11:35,360
unload lots of solar pressure all those

2521
02:11:39,270 --> 02:11:37,040
things go bad we still want 10 years of

2522
02:11:41,830 --> 02:11:39,280
fuel and so all of our worst case

2523
02:11:45,030 --> 02:11:41,840
calculations is how we came up

2524
02:11:48,069 --> 02:11:45,040
how many uh kilograms of of fuel to take

2525
02:11:49,910 --> 02:11:48,079
on board uh fortunately so far

2526
02:11:52,550 --> 02:11:49,920
those worst case conditions uh i think

2527
02:11:54,629 --> 02:11:52,560
as amy said yesterday

2528
02:11:57,830 --> 02:11:54,639
we conservative so all those conditions

2529
02:12:00,229 --> 02:11:57,840
so far have not been on the worst case

2530
02:12:02,390 --> 02:12:00,239
our execution

2531
02:12:04,390 --> 02:12:02,400
of that first burn and again everything

2532
02:12:07,030 --> 02:12:04,400
has been really really good so we expect

2533
02:12:10,470 --> 02:12:07,040
to use significantly less than we expect

2534
02:12:11,669 --> 02:12:10,480
to have much more than the 10 years

2535
02:12:13,830 --> 02:12:11,679
i'll just mention that the question

2536
02:12:15,270 --> 02:12:13,840
about the solar sail effect on the uh

2537
02:12:16,950 --> 02:12:15,280
the heat shield comes from alan on

2538
02:12:17,990 --> 02:12:16,960
facebook so thank you very much for your

2539
02:12:19,430 --> 02:12:18,000
question

2540
02:12:20,709 --> 02:12:19,440
there's um

2541
02:12:22,550 --> 02:12:20,719
there's a question coming in that maybe

2542
02:12:24,870 --> 02:12:22,560
i could take a little bit of a crack at

2543
02:12:26,870 --> 02:12:24,880
answering myself and and keith certainly

2544
02:12:29,109 --> 02:12:26,880
you can uh you can chime in on this but

2545
02:12:31,830 --> 02:12:29,119
mike on facebook asks who will be able

2546
02:12:33,750 --> 02:12:31,840
to use web just nasa and i think this is

2547
02:12:35,510 --> 02:12:33,760
a chance to kind of talk a bit about the

2548
02:12:36,470 --> 02:12:35,520
international nature of this this

2549
02:12:38,950 --> 02:12:36,480
mission

2550
02:12:40,550 --> 02:12:38,960
so um absolutely it will not be just

2551
02:12:41,669 --> 02:12:40,560
nasa that is using the web space

2552
02:12:43,189 --> 02:12:41,679
telescope

2553
02:12:45,189 --> 02:12:43,199
um

2554
02:12:47,510 --> 02:12:45,199
the web space telescope has several

2555
02:12:49,270 --> 02:12:47,520
major international partners uh our our

2556
02:12:51,830 --> 02:12:49,280
big partners are the european space

2557
02:12:54,550 --> 02:12:51,840
agency and the canadian space agency and

2558
02:12:56,790 --> 02:12:54,560
so there is a time allocation to the

2559
02:12:58,629 --> 02:12:56,800
major partners uh you know in this

2560
02:12:59,830 --> 02:12:58,639
mission that so so the european

2561
02:13:01,750 --> 02:12:59,840
astronomers people working with the

2562
02:13:04,550 --> 02:13:01,760
european space agency and also the

2563
02:13:06,229 --> 02:13:04,560
canadian space agency however

2564
02:13:08,069 --> 02:13:06,239
like hubble

2565
02:13:10,790 --> 02:13:08,079
the webb telescope is

2566
02:13:12,790 --> 02:13:10,800
a world observatory and what will happen

2567
02:13:15,189 --> 02:13:12,800
in the future is that there will be

2568
02:13:17,109 --> 02:13:15,199
committees of astronomers that every

2569
02:13:19,189 --> 02:13:17,119
year will review proposals from all over

2570
02:13:21,189 --> 02:13:19,199
the world from teams of scientists who

2571
02:13:22,470 --> 02:13:21,199
want to use the web telescope for their

2572
02:13:25,270 --> 02:13:22,480
own research

2573
02:13:27,350 --> 02:13:25,280
and again while the main organizations

2574
02:13:29,189 --> 02:13:27,360
responsible for the operation and the

2575
02:13:30,390 --> 02:13:29,199
building and testing of web we'll have

2576
02:13:32,709 --> 02:13:30,400
some time allocated to them

2577
02:13:34,550 --> 02:13:32,719
automatically a lot of this will be open

2578
02:13:36,310 --> 02:13:34,560
to the public in the sense that

2579
02:13:38,229 --> 02:13:36,320
professional astronomers from all around

2580
02:13:41,189 --> 02:13:38,239
the world will be able to use it

2581
02:13:42,870 --> 02:13:41,199
and it's not just the uh the

2582
02:13:45,270 --> 02:13:42,880
observations themselves the other thing

2583
02:13:47,270 --> 02:13:45,280
that's really really important to talk

2584
02:13:49,030 --> 02:13:47,280
about is the archive

2585
02:13:51,589 --> 02:13:49,040
that's the the data taken by the web

2586
02:13:54,069 --> 02:13:51,599
telescope when you're an astronomer say

2587
02:13:55,830 --> 02:13:54,079
you know i i actually have been honored

2588
02:13:58,870 --> 02:13:55,840
to use the hubble space telescope myself

2589
02:14:00,550 --> 02:13:58,880
in the past um you you write a proposal

2590
02:14:03,669 --> 02:14:00,560
to this committee of scientists every

2591
02:14:05,270 --> 02:14:03,679
year that then ranks uh the proposals in

2592
02:14:06,629 --> 02:14:05,280
terms of their their priority their

2593
02:14:08,790 --> 02:14:06,639
science priority

2594
02:14:10,390 --> 02:14:08,800
and uh and then you you get your data

2595
02:14:12,069 --> 02:14:10,400
based on whether you make that priority

2596
02:14:14,069 --> 02:14:12,079
list and if you don't you can apply

2597
02:14:16,229 --> 02:14:14,079
again next time and all of that but that

2598
02:14:18,470 --> 02:14:16,239
all goes into an archive and that

2599
02:14:21,109 --> 02:14:18,480
archive after a certain amount of time

2600
02:14:22,790 --> 02:14:21,119
is public and anybody can use the data

2601
02:14:24,870 --> 02:14:22,800
so if you're a scientist that's won the

2602
02:14:26,709 --> 02:14:24,880
proposal you you should get a first

2603
02:14:28,229 --> 02:14:26,719
chance to look at your data and make

2604
02:14:30,390 --> 02:14:28,239
your discoveries and observations that

2605
02:14:32,149 --> 02:14:30,400
you want to but then eventually that

2606
02:14:34,390 --> 02:14:32,159
that data gets put into an archive where

2607
02:14:36,629 --> 02:14:34,400
anybody can use the data

2608
02:14:38,229 --> 02:14:36,639
so this is a world treasure it's not

2609
02:14:40,390 --> 02:14:38,239
just nasa that will be using this

2610
02:14:41,990 --> 02:14:40,400
observatory and it's not just nasa that

2611
02:14:43,669 --> 02:14:42,000
built the observatory and launched the

2612
02:14:45,669 --> 02:14:43,679
observatory this has been an

2613
02:14:47,669 --> 02:14:45,679
international program from the very

2614
02:14:49,910 --> 02:14:47,679
beginning so that's something we're very

2615
02:14:53,030 --> 02:14:49,920
proud of

2616
02:14:54,709 --> 02:14:53,040
let's see so uh um i know you know i

2617
02:14:56,149 --> 02:14:54,719
mean i i'm getting you know more and

2618
02:14:58,470 --> 02:14:56,159
more excited you know the the heat

2619
02:15:00,790 --> 02:14:58,480
shield was a tremendously complex part

2620
02:15:02,390 --> 02:15:00,800
of this observatory so for people that

2621
02:15:04,629 --> 02:15:02,400
are just joining us maybe you could give

2622
02:15:07,030 --> 02:15:04,639
us some sense uh mike a little bit about

2623
02:15:09,109 --> 02:15:07,040
uh the number of actuators maybe talk

2624
02:15:10,870 --> 02:15:09,119
about what an actuator is and the number

2625
02:15:13,910 --> 02:15:10,880
of things that had to happen to get this

2626
02:15:15,589 --> 02:15:13,920
thing to to unfold and detention it was

2627
02:15:17,270 --> 02:15:15,599
it's something that you know all of us

2628
02:15:19,589 --> 02:15:17,280
are just you know thrilled to see

2629
02:15:21,990 --> 02:15:19,599
happening so beautifully in front of us

2630
02:15:24,390 --> 02:15:22,000
okay give us a sense of that

2631
02:15:26,790 --> 02:15:24,400
yeah so uh you know one of the big the

2632
02:15:29,270 --> 02:15:26,800
big things that you know as we've talked

2633
02:15:30,629 --> 02:15:29,280
about is the amount of mechanisms that

2634
02:15:33,750 --> 02:15:30,639
that we use

2635
02:15:36,870 --> 02:15:33,760
uh specifically the the pin so when we

2636
02:15:38,790 --> 02:15:36,880
fold up we fold up all these layers

2637
02:15:40,790 --> 02:15:38,800
we have to sort of secure them to the

2638
02:15:43,589 --> 02:15:40,800
primary structure which we deployed uh

2639
02:15:46,149 --> 02:15:43,599
back on day three after we launched so

2640
02:15:48,790 --> 02:15:46,159
those those pins there was 107 of them

2641
02:15:51,030 --> 02:15:48,800
uh and and we had to sort of spear all

2642
02:15:52,870 --> 02:15:51,040
the material put holes in the material

2643
02:15:54,470 --> 02:15:52,880
and actually push them through to

2644
02:15:56,709 --> 02:15:54,480
connect our structure here you're seeing

2645
02:15:58,310 --> 02:15:56,719
our solar array come out in this graphic

2646
02:15:59,510 --> 02:15:58,320
again we got we were able to capture

2647
02:16:01,669 --> 02:15:59,520
that live

2648
02:16:03,109 --> 02:16:01,679
uh on launch day and that's that antenna

2649
02:16:04,470 --> 02:16:03,119
that's currently communicating with

2650
02:16:05,589 --> 02:16:04,480
canberra so here's these forward

2651
02:16:08,310 --> 02:16:05,599
structures

2652
02:16:10,950 --> 02:16:08,320
all of the material that's now out uh

2653
02:16:12,870 --> 02:16:10,960
you know out is as was pinned to this

2654
02:16:14,470 --> 02:16:12,880
structure meaning it was actually uh

2655
02:16:16,069 --> 02:16:14,480
there was 107

2656
02:16:17,830 --> 02:16:16,079
pins that went through it and actually

2657
02:16:21,350 --> 02:16:17,840
held it down to that structure we had to

2658
02:16:22,950 --> 02:16:21,360
release all 107 of those uh pins and and

2659
02:16:24,950 --> 02:16:22,960
we and we did that over the last few

2660
02:16:27,270 --> 02:16:24,960
days and you know and then we had this

2661
02:16:29,270 --> 02:16:27,280
cover roll up this cover rolls up as we

2662
02:16:31,189 --> 02:16:29,280
release those pins you can see the aft

2663
02:16:33,190 --> 02:16:31,199
going there and in the front you can see

2664
02:16:34,629 --> 02:16:33,200
our cover rolling up as we release these

2665
02:16:36,469 --> 02:16:34,639
pins

2666
02:16:37,589 --> 02:16:36,479
now this was our big event on new year's

2667
02:16:39,509 --> 02:16:37,599
eve

2668
02:16:41,270 --> 02:16:39,519
when we released the final set of pins

2669
02:16:44,709 --> 02:16:41,280
and the covers unrolled and we actually

2670
02:16:47,910 --> 02:16:44,719
used these telescoping booms to pull out

2671
02:16:50,070 --> 02:16:47,920
all five layers so this was quite uh the

2672
02:16:52,950 --> 02:16:50,080
big event for us as far as changing

2673
02:16:55,429 --> 02:16:52,960
webb's overall appearance uh it made a

2674
02:16:57,830 --> 02:16:55,439
dramatic change in our temperatures uh

2675
02:16:59,509 --> 02:16:57,840
when we did these uh two booms again you

2676
02:17:00,870 --> 02:16:59,519
can see that cover rolling under right

2677
02:17:02,549 --> 02:17:00,880
there

2678
02:17:06,230 --> 02:17:02,559
and this is our other side coming out so

2679
02:17:09,030 --> 02:17:06,240
i think releasing those 107 pins uh was

2680
02:17:10,790 --> 02:17:09,040
was quite an achievement uh again uh

2681
02:17:13,270 --> 02:17:10,800
because uh you know one doesn't release

2682
02:17:15,030 --> 02:17:13,280
then then our membranes are trapped and

2683
02:17:17,270 --> 02:17:15,040
we would have had to go into a different

2684
02:17:19,830 --> 02:17:17,280
contingency operation so again you're

2685
02:17:22,150 --> 02:17:19,840
seeing uh what's going on right now uh

2686
02:17:23,509 --> 02:17:22,160
this is uh old footage of when we tested

2687
02:17:26,070 --> 02:17:23,519
the sun shield on the ground for the

2688
02:17:27,669 --> 02:17:26,080
very last time uh so everything you're

2689
02:17:28,870 --> 02:17:27,679
seeing in this video right now in this

2690
02:17:31,270 --> 02:17:28,880
time lapse

2691
02:17:33,830 --> 02:17:31,280
uh which is probably just a few seconds

2692
02:17:34,709 --> 02:17:33,840
long is is taking us yesterday and today

2693
02:17:37,830 --> 02:17:34,719
to do

2694
02:17:39,589 --> 02:17:37,840
so uh you can see in this time lapse uh

2695
02:17:42,150 --> 02:17:39,599
the last layer is tensioning up and you

2696
02:17:45,270 --> 02:17:42,160
can see what a dramatic uh change that

2697
02:17:47,990 --> 02:17:45,280
it takes uh as it is uh stretched out

2698
02:17:51,110 --> 02:17:49,190
and uh we have a question from

2699
02:17:52,070 --> 02:17:51,120
gracequirrell on twitter and this is one

2700
02:17:53,750 --> 02:17:52,080
that maybe i can take to give you a

2701
02:17:56,629 --> 02:17:53,760
little bit of a break mike but i'm sorry

2702
02:17:58,389 --> 02:17:56,639
break but you can jump right in so grace

2703
02:18:00,389 --> 02:17:58,399
girl on twitter asks why does it take

2704
02:18:02,230 --> 02:18:00,399
until june to start science operations

2705
02:18:03,830 --> 02:18:02,240
with the james webb space telescope and

2706
02:18:05,589 --> 02:18:03,840
what else needs to happen after reaching

2707
02:18:07,030 --> 02:18:05,599
out too and i think this is a chance to

2708
02:18:08,870 --> 02:18:07,040
give us a little bit of a look ahead

2709
02:18:10,230 --> 02:18:08,880
about what's going to be going on uh

2710
02:18:12,469 --> 02:18:10,240
after today and after the heat shield

2711
02:18:14,230 --> 02:18:12,479
happens so one of the things i can say

2712
02:18:16,389 --> 02:18:14,240
is that a lot of this has to do with

2713
02:18:18,469 --> 02:18:16,399
with cooling the telescope down uh this

2714
02:18:20,549 --> 02:18:18,479
is an infrared telescope the reason we

2715
02:18:22,629 --> 02:18:20,559
have these incredible heat shields is so

2716
02:18:24,709 --> 02:18:22,639
that the observatory itself can be very

2717
02:18:26,469 --> 02:18:24,719
cold very sensitive to the infrared

2718
02:18:27,990 --> 02:18:26,479
radiation from space

2719
02:18:30,150 --> 02:18:28,000
and so the things that will be happening

2720
02:18:31,589 --> 02:18:30,160
in the next few days

2721
02:18:33,509 --> 02:18:31,599
personally i'm really looking forward to

2722
02:18:35,110 --> 02:18:33,519
the deployment of the secondary mirror

2723
02:18:37,110 --> 02:18:35,120
there are these very large boom

2724
02:18:39,030 --> 02:18:37,120
structures that will come out in front

2725
02:18:41,190 --> 02:18:39,040
of web and that will bring the focusing

2726
02:18:44,070 --> 02:18:41,200
mirror the the primary mirror is that

2727
02:18:46,309 --> 02:18:44,080
beautiful 18 segmented gold mirror that

2728
02:18:48,309 --> 02:18:46,319
all of us have been uh talking about but

2729
02:18:50,389 --> 02:18:48,319
then there's also the secondary mirror

2730
02:18:52,230 --> 02:18:50,399
that needs to come out on these booms

2731
02:18:54,309 --> 02:18:52,240
that the uh all of these 18 mirror

2732
02:18:55,990 --> 02:18:54,319
segments will focus the light up to and

2733
02:18:57,830 --> 02:18:56,000
then that light will be actually

2734
02:18:59,270 --> 02:18:57,840
reflected back down into the instrument

2735
02:19:01,110 --> 02:18:59,280
package for web

2736
02:19:03,030 --> 02:19:01,120
and so that's one of the big deployments

2737
02:19:04,870 --> 02:19:03,040
that will happen in the coming week

2738
02:19:06,150 --> 02:19:04,880
just listening exactly right that's our

2739
02:19:07,910 --> 02:19:06,160
next one that we're really really

2740
02:19:09,190 --> 02:19:07,920
excited about because that's uh you know

2741
02:19:11,750 --> 02:19:09,200
again the sun shield is great

2742
02:19:14,790 --> 02:19:11,760
engineering um it's absolutely needed

2743
02:19:16,950 --> 02:19:14,800
for this mission um and and it's it's

2744
02:19:19,429 --> 02:19:16,960
incredible um but the sun shield is

2745
02:19:20,950 --> 02:19:19,439
there to to cool what we really want and

2746
02:19:22,790 --> 02:19:20,960
that's the that's that telescope and

2747
02:19:24,790 --> 02:19:22,800
their science instruments so we really

2748
02:19:27,910 --> 02:19:24,800
want to get those deployed

2749
02:19:31,509 --> 02:19:29,270
and then after that we have the full

2750
02:19:34,150 --> 02:19:31,519
deployment of the primary mirror so the

2751
02:19:36,549 --> 02:19:34,160
uh that the that 18 segment mirror has

2752
02:19:38,150 --> 02:19:36,559
two wings uh the wings will both be

2753
02:19:40,070 --> 02:19:38,160
deployed so you can see here in this

2754
02:19:41,910 --> 02:19:40,080
animation there's the secondary mirror

2755
02:19:43,750 --> 02:19:41,920
that's coming out on this large boom

2756
02:19:45,589 --> 02:19:43,760
that's the focusing mirror and you can

2757
02:19:47,270 --> 02:19:45,599
see that it'll be focusing things down

2758
02:19:48,870 --> 02:19:47,280
to the sort of that that black

2759
02:19:50,790 --> 02:19:48,880
protrusion coming out of the center of

2760
02:19:53,270 --> 02:19:50,800
the gold mirror and then after that the

2761
02:19:55,030 --> 02:19:53,280
two wing segments will also be deployed

2762
02:19:58,309 --> 02:19:55,040
and uh once that happens we will have

2763
02:20:00,150 --> 02:19:58,319
the full uh fully commissioned and uh

2764
02:20:02,469 --> 02:20:00,160
huge thing is it takes about two months

2765
02:20:04,630 --> 02:20:02,479
for our telescope

2766
02:20:06,870 --> 02:20:04,640
engineers and scientists to sort of

2767
02:20:09,349 --> 02:20:06,880
align it and and and sort of you know

2768
02:20:11,429 --> 02:20:09,359
focus it so to speak uh and to make it

2769
02:20:13,190 --> 02:20:11,439
working at an operational you know as an

2770
02:20:15,349 --> 02:20:13,200
actual telescope and then it takes

2771
02:20:16,630 --> 02:20:15,359
another couple months you know alongside

2772
02:20:18,070 --> 02:20:16,640
of that it takes another couple months

2773
02:20:20,550 --> 02:20:18,080
for our instrument teams to get their

2774
02:20:22,710 --> 02:20:20,560
instruments calibrated uh and get them

2775
02:20:24,309 --> 02:20:22,720
all uh checked out so it all adds up to

2776
02:20:25,990 --> 02:20:24,319
about six months

2777
02:20:28,710 --> 02:20:26,000
uh before we would actually get some of

2778
02:20:31,349 --> 02:20:28,720
our first science and and it really that

2779
02:20:33,670 --> 02:20:31,359
cool down uh drives a lot of what we

2780
02:20:35,750 --> 02:20:33,680
call our entry criteria like we cannot

2781
02:20:37,670 --> 02:20:35,760
let uh we you know

2782
02:20:39,830 --> 02:20:37,680
the telescope can't do certain things

2783
02:20:41,510 --> 02:20:39,840
until it reaches certain temperatures so

2784
02:20:43,750 --> 02:20:41,520
that cool down on top of these really

2785
02:20:45,510 --> 02:20:43,760
really precise operations that our

2786
02:20:47,270 --> 02:20:45,520
instrument and our telescope teams need

2787
02:20:49,510 --> 02:20:47,280
to do all kind of add up to that that

2788
02:20:51,429 --> 02:20:49,520
six month period or four months period

2789
02:20:53,510 --> 02:20:51,439
on top of the you know what we're doing

2790
02:20:55,990 --> 02:20:53,520
right now in this first month one two

2791
02:20:59,990 --> 02:20:57,590
you've heard us say before just what a

2792
02:21:01,750 --> 02:21:00,000
technological marvel the webb telescope

2793
02:21:03,429 --> 02:21:01,760
is and talking about some of these

2794
02:21:06,150 --> 02:21:03,439
deployment activities these commission

2795
02:21:07,750 --> 02:21:06,160
activities that are going on um uh keith

2796
02:21:09,670 --> 02:21:07,760
there mentioned the the idea that the

2797
02:21:11,990 --> 02:21:09,680
alignment of the mirrors needs to happen

2798
02:21:14,389 --> 02:21:12,000
and of course we have we have 18

2799
02:21:16,309 --> 02:21:14,399
wonderful gold-coated uh segmented

2800
02:21:19,670 --> 02:21:16,319
mirrors but they all need to work as one

2801
02:21:21,270 --> 02:21:19,680
continuous telescope mirror and and so

2802
02:21:24,150 --> 02:21:21,280
part of this commissioning will be to

2803
02:21:26,389 --> 02:21:24,160
actually do focusing of each of the 18

2804
02:21:28,070 --> 02:21:26,399
segments the the uh keith maybe you gave

2805
02:21:30,550 --> 02:21:28,080
us a sense that the the segments can all

2806
02:21:32,950 --> 02:21:30,560
move independently is that correct

2807
02:21:33,750 --> 02:21:32,960
that's right they they can they can tilt

2808
02:21:35,910 --> 02:21:33,760
uh

2809
02:21:37,750 --> 02:21:35,920
they they can yeah they're they can move

2810
02:21:40,309 --> 02:21:37,760
they can move in in a lot of different

2811
02:21:43,270 --> 02:21:40,319
directions uh and again it's not a lot

2812
02:21:45,510 --> 02:21:43,280
of movement uh but but uh but they all

2813
02:21:48,150 --> 02:21:45,520
can move in different directions uh to

2814
02:21:49,750 --> 02:21:48,160
align themselves uh they can also be

2815
02:21:51,590 --> 02:21:49,760
pushed and pulled a little bit to sort

2816
02:21:54,469 --> 02:21:51,600
of change their radius of curvature a

2817
02:21:57,030 --> 02:21:54,479
tiny tiny bit uh so all those different

2818
02:21:59,990 --> 02:21:57,040
uh movements have to be well well

2819
02:22:02,389 --> 02:22:00,000
coordinated and it's quite the uh uh

2820
02:22:05,349 --> 02:22:02,399
quite the quite the challenge uh that

2821
02:22:07,429 --> 02:22:05,359
the optics team has coming up uh for

2822
02:22:09,750 --> 02:22:07,439
them to do that so that's that's really

2823
02:22:11,030 --> 02:22:09,760
really groundbreaking you know really

2824
02:22:13,429 --> 02:22:11,040
groundbreaking what they're getting

2825
02:22:15,190 --> 02:22:13,439
ready to go into uh which is aligning

2826
02:22:17,510 --> 02:22:15,200
those 18 segments so they have full

2827
02:22:19,190 --> 02:22:17,520
control over all of them uh but even

2828
02:22:20,710 --> 02:22:19,200
though they have full control over them

2829
02:22:22,710 --> 02:22:20,720
they have to get the data back down to

2830
02:22:25,750 --> 02:22:22,720
the ground or where they are uh and

2831
02:22:28,710 --> 02:22:25,760
again the you know a lot a lot of ground

2832
02:22:30,870 --> 02:22:28,720
system processing to compute uh the next

2833
02:22:32,550 --> 02:22:30,880
move and then they'll just keep cycling

2834
02:22:34,150 --> 02:22:32,560
through and at the same time they're

2835
02:22:36,230 --> 02:22:34,160
imaging you know they're taking

2836
02:22:38,230 --> 02:22:36,240
reference stars to make and using those

2837
02:22:40,389 --> 02:22:38,240
reference stars that to help them help

2838
02:22:42,230 --> 02:22:40,399
them align and focus the telescope it's

2839
02:22:44,710 --> 02:22:42,240
a very painstaking process it's

2840
02:22:45,990 --> 02:22:44,720
groundbreaking uh um but it but it but

2841
02:22:48,950 --> 02:22:46,000
it's going to be really really really

2842
02:22:50,710 --> 02:22:48,960
something when they get it all done

2843
02:22:52,070 --> 02:22:50,720
and one of the the other parts of the

2844
02:22:53,830 --> 02:22:52,080
commissioning that i think is is just

2845
02:22:55,429 --> 02:22:53,840
incredible is that because this

2846
02:22:56,950 --> 02:22:55,439
telescope is operating it's just low

2847
02:22:59,110 --> 02:22:56,960
temperatures a lot of people are

2848
02:23:01,190 --> 02:22:59,120
familiar with the idea that materials

2849
02:23:02,870 --> 02:23:01,200
expand and contract and change shape as

2850
02:23:05,110 --> 02:23:02,880
they change temperature

2851
02:23:07,429 --> 02:23:05,120
and so these mirror segments which are

2852
02:23:09,830 --> 02:23:07,439
are made from beryllium that's it's a

2853
02:23:12,790 --> 02:23:09,840
it's a type of metal that behaves very

2854
02:23:15,030 --> 02:23:12,800
well under very cold uh circumstances

2855
02:23:17,349 --> 02:23:15,040
keeps it shape it works very well

2856
02:23:19,830 --> 02:23:17,359
um the beryllium segments actually were

2857
02:23:22,150 --> 02:23:19,840
ground uh to a curvature that isn't

2858
02:23:24,550 --> 02:23:22,160
correct when it's at room temperature

2859
02:23:26,070 --> 02:23:24,560
they actually need to cool down to this

2860
02:23:28,790 --> 02:23:26,080
operating temperature that we said which

2861
02:23:30,389 --> 02:23:28,800
is close to minus 400 degrees fahrenheit

2862
02:23:31,830 --> 02:23:30,399
and it's only at that operating

2863
02:23:34,550 --> 02:23:31,840
temperature that the curvature of the

2864
02:23:36,309 --> 02:23:34,560
mirrors are correct is that right keith

2865
02:23:37,990 --> 02:23:36,319
yeah yeah and again that you're going

2866
02:23:39,110 --> 02:23:38,000
back you know you know again the

2867
02:23:41,670 --> 02:23:39,120
development

2868
02:23:44,630 --> 02:23:41,680
history of is uh just doing that very

2869
02:23:49,510 --> 02:23:44,640
operation and making it

2870
02:23:53,190 --> 02:23:50,870
i see something happening in the mock

2871
02:23:55,910 --> 02:23:53,200
people are getting excited okay

2872
02:23:58,830 --> 02:23:55,920
here we go mom i can confirm the final

2873
02:24:01,750 --> 02:23:58,840
signature on the aft mts which

2874
02:24:07,750 --> 02:24:01,760
indicates that all five layers of the

2875
02:24:12,230 --> 02:24:10,150
how exciting

2876
02:24:16,150 --> 02:24:12,240
significant milestone accomplished job

2877
02:24:18,950 --> 02:24:16,160
well done sunshield team job well done

2878
02:24:21,110 --> 02:24:18,960
yeah so thank you mom

2879
02:24:23,830 --> 02:24:21,120
all stations this is my mind ops all

2880
02:24:25,190 --> 02:24:23,840
stations this is my monops standby for

2881
02:24:26,550 --> 02:24:25,200
p.m

2882
02:24:28,550 --> 02:24:26,560
hey guys

2883
02:24:30,790 --> 02:24:28,560
this is the dev ops you can go ahead and

2884
02:24:34,790 --> 02:24:30,800
execute ge stop deploy

2885
02:24:37,670 --> 02:24:36,550
it's incredible to see you watching live

2886
02:24:42,309 --> 02:24:37,680
footage of the mock the mission

2887
02:24:47,270 --> 02:24:44,309
it looks like we are very

2888
02:24:49,429 --> 02:24:47,280
close to declaring victory on the uh the

2889
02:24:52,950 --> 02:24:49,439
deployment of the sun shield

2890
02:24:54,630 --> 02:24:52,960
yeah and i can confirm right or stop

2891
02:24:58,550 --> 02:24:54,640
stand by congratulating the team

2892
02:25:01,670 --> 02:25:00,870
many years in the making right here so

2893
02:25:04,870 --> 02:25:01,680
uh

2894
02:25:07,110 --> 02:25:04,880
industry

2895
02:25:08,469 --> 02:25:07,120
partners uh you know it's just an

2896
02:25:10,150 --> 02:25:08,479
amazing achievements i just want to

2897
02:25:11,510 --> 02:25:10,160
congratulate our sunshield team right

2898
02:25:13,429 --> 02:25:11,520
now um

2899
02:25:15,830 --> 02:25:13,439
what an achievement

2900
02:25:17,910 --> 02:25:15,840
okay hey i just want to take a moment to

2901
02:25:20,710 --> 02:25:17,920
congratulate everybody this is a really

2902
02:25:22,469 --> 02:25:20,720
big moment we have a bunch of work

2903
02:25:25,750 --> 02:25:22,479
front shield

2904
02:25:27,110 --> 02:25:25,760
unbelievable after many years

2905
02:25:29,110 --> 02:25:27,120
sorry about that

2906
02:25:30,950 --> 02:25:29,120
since i don't normally talk uh we bring

2907
02:25:32,150 --> 02:25:30,960
the mic down anyway so i said this is a

2908
02:25:34,389 --> 02:25:32,160
really big moment i just want to

2909
02:25:36,309 --> 02:25:34,399
congratulate the entire team

2910
02:25:37,510 --> 02:25:36,319
we still got a lot of work to do but um

2911
02:25:39,830 --> 02:25:37,520
but getting the sun shield out and

2912
02:25:41,670 --> 02:25:39,840
deployed is really really big

2913
02:25:43,510 --> 02:25:41,680
um if you constantly constantly

2914
02:25:46,389 --> 02:25:43,520
reinforce what i tell everybody that the

2915
02:25:48,070 --> 02:25:46,399
jwst team is the best in nasa there's

2916
02:25:50,630 --> 02:25:48,080
hands down nobody better than what we

2917
02:25:52,710 --> 02:25:50,640
have here you guys should all take pride

2918
02:25:54,710 --> 02:25:52,720
in all these accomplishments

2919
02:25:56,950 --> 02:25:54,720
um one of the things i've told folks

2920
02:25:58,710 --> 02:25:56,960
i've been putting emails this is so

2921
02:25:59,590 --> 02:25:58,720
unique what we do in this in this

2922
02:26:01,750 --> 02:25:59,600
mission

2923
02:26:04,070 --> 02:26:01,760
um we are going to be bonded forever by

2924
02:26:05,670 --> 02:26:04,080
what we've experienced through not only

2925
02:26:08,070 --> 02:26:05,680
just through operations with the mission

2926
02:26:09,910 --> 02:26:08,080
ops team but over the last

2927
02:26:11,349 --> 02:26:09,920
all those have worked on over 20 plus

2928
02:26:12,550 --> 02:26:11,359
years

2929
02:26:13,990 --> 02:26:12,560
and finally

2930
02:26:15,670 --> 02:26:14,000
when i i'll just tell you what i put on

2931
02:26:16,630 --> 02:26:15,680
facebook last night when i shared the

2932
02:26:19,750 --> 02:26:16,640
story

2933
02:26:21,270 --> 02:26:19,760
i just said the jvs team kicks butt

2934
02:26:23,349 --> 02:26:21,280
i didn't use the word but i used another

2935
02:26:31,349 --> 02:26:23,359
word but i won't use that word here

2936
02:26:35,190 --> 02:26:34,309
absolutely awesome so yeah this is uh

2937
02:26:37,110 --> 02:26:35,200
you know

2938
02:26:38,469 --> 02:26:37,120
we'll let our we'll let our celebrations

2939
02:26:40,230 --> 02:26:38,479
continue

2940
02:26:42,309 --> 02:26:40,240
this is incredible what an incredible

2941
02:26:43,750 --> 02:26:42,319
week

2942
02:26:46,550 --> 02:26:43,760
but folks like me are looking ahead

2943
02:26:48,630 --> 02:26:46,560
right now i'm looking at

2944
02:26:51,510 --> 02:26:48,640
deployment and uh can't wait to get that

2945
02:26:53,270 --> 02:26:51,520
out so uh but uh congratulations to our

2946
02:26:55,429 --> 02:26:53,280
entire team it's just awesome and just

2947
02:26:57,190 --> 02:26:55,439
want to pass along some thanks

2948
02:26:58,870 --> 02:26:57,200
to you know everybody viewing this

2949
02:27:00,389 --> 02:26:58,880
everybody's been rooting us on all

2950
02:27:01,990 --> 02:27:00,399
stations this is my lineup we're gonna

2951
02:27:03,270 --> 02:27:02,000
hold right here for just a moment all

2952
02:27:07,670 --> 02:27:03,280
the stations

2953
02:27:11,030 --> 02:27:09,429
enjoy your moment and then we'll pick up

2954
02:27:12,230 --> 02:27:11,040
with this as you said it's so wonderful

2955
02:27:14,309 --> 02:27:12,240
to have all the people that are joining

2956
02:27:17,670 --> 02:27:14,319
us around the world for this event uh

2957
02:27:19,429 --> 02:27:17,680
this is truly incredible um when i first

2958
02:27:21,590 --> 02:27:19,439
saw the design of the james webb space

2959
02:27:23,750 --> 02:27:21,600
telescope and just the ambition of it

2960
02:27:25,510 --> 02:27:23,760
and the size of it and the scale of it

2961
02:27:27,429 --> 02:27:25,520
and this giant heat shield that needed

2962
02:27:30,230 --> 02:27:27,439
to come out and so many things needed to

2963
02:27:32,630 --> 02:27:30,240
work you know it took my breath away and

2964
02:27:34,710 --> 02:27:32,640
uh i'm i'm here i'm actually getting

2965
02:27:36,630 --> 02:27:34,720
goosebumps i mean this is this is a

2966
02:27:39,270 --> 02:27:36,640
wonderful wonderful time how are you

2967
02:27:41,590 --> 02:27:39,280
feeling uh keith oh yeah it's just uh

2968
02:27:43,030 --> 02:27:41,600
like i said my my half my mind is going

2969
02:27:44,389 --> 02:27:43,040
woohoo and then the half of my mind's

2970
02:27:46,389 --> 02:27:44,399
going let's get that you know we gotta

2971
02:27:48,070 --> 02:27:46,399
get that secondary around so that's just

2972
02:27:49,830 --> 02:27:48,080
how my mind works

2973
02:27:51,990 --> 02:27:49,840
but that's good that's good but uh no

2974
02:27:54,389 --> 02:27:52,000
this is really good i mean and webb is

2975
02:27:56,309 --> 02:27:54,399
absolutely hopefully everybody

2976
02:27:58,550 --> 02:27:56,319
is becoming iconic a little bit it is

2977
02:28:01,110 --> 02:27:58,560
absolutely a beautiful spacecraft

2978
02:28:04,309 --> 02:28:01,120
um we did not design it to be beautiful

2979
02:28:06,630 --> 02:28:04,319
we designed it to be functional uh but

2980
02:28:08,469 --> 02:28:06,640
as a as a fact of making it functional

2981
02:28:10,469 --> 02:28:08,479
it's absolutely a stunning spacecraft i

2982
02:28:11,910 --> 02:28:10,479
did get to spend a few minutes with it

2983
02:28:13,990 --> 02:28:11,920
in the clean room before we shipped it

2984
02:28:15,990 --> 02:28:14,000
down to launch and i just i was just

2985
02:28:18,230 --> 02:28:16,000
amazed that just how beautiful of a

2986
02:28:21,590 --> 02:28:18,240
machine it is so and that machine is

2987
02:28:25,990 --> 02:28:21,600
really a function of hand built by by by

2988
02:28:29,349 --> 02:28:26,000
this team so uh so a salute to that

2989
02:28:33,590 --> 02:28:31,830
so to confirm uh keith we we we we have

2990
02:28:38,950 --> 02:28:33,600
final confirmation that the heat shield

2991
02:28:41,670 --> 02:28:39,990
we're we're gonna jump back into the

2992
02:28:43,510 --> 02:28:41,680
cast here and continue with the coolest

2993
02:28:45,190 --> 02:28:43,520
thing in space

2994
02:28:54,389 --> 02:28:45,200
there is nothing cooler in space than

2995
02:28:59,670 --> 02:28:56,190
i love that the coolest thing in space

2996
02:29:01,510 --> 02:28:59,680
[Laughter]

2997
02:29:03,270 --> 02:29:01,520
as you can tell even though we uh finish

2998
02:29:05,429 --> 02:29:03,280
this up we're going to move on to this

2999
02:29:07,110 --> 02:29:05,439
evening's activities right off the bat

3000
02:29:08,150 --> 02:29:07,120
so we have some more

3001
02:29:10,550 --> 02:29:08,160
uh thing

3002
02:29:11,429 --> 02:29:10,560
24-hour operation there and we're

3003
02:29:15,590 --> 02:29:11,439
concerned

3004
02:29:19,670 --> 02:29:17,190
that bleed has confirmed that the

3005
02:29:21,670 --> 02:29:19,680
membrane tensioning is complete

3006
02:29:23,990 --> 02:29:21,680
so this time we're ready to continue

3007
02:29:26,469 --> 02:29:24,000
with 666.022

3008
02:29:28,309 --> 02:29:26,479
d eu to standby

3009
02:29:32,790 --> 02:29:28,319
what's going on

3010
02:29:34,550 --> 02:29:32,800
uh we're going to start shutting down or

3011
02:29:36,950 --> 02:29:34,560
reconfiguring our electronics and

3012
02:29:37,830 --> 02:29:36,960
turning off our motors

3013
02:29:39,590 --> 02:29:37,840
and

3014
02:29:41,349 --> 02:29:39,600
basically tell our electronics that have

3015
02:29:43,830 --> 02:29:41,359
been driving these deployments that

3016
02:29:45,830 --> 02:29:43,840
their job is done uh thank you very much

3017
02:29:48,309 --> 02:29:45,840
you did your job and now you get to move

3018
02:29:49,429 --> 02:29:48,319
on to your next thing uh so that's what

3019
02:29:52,070 --> 02:29:49,439
they're doing right now they're just

3020
02:29:53,750 --> 02:29:52,080
basically shutting things down uh and

3021
02:29:56,870 --> 02:29:53,760
getting configured for the next

3022
02:29:58,950 --> 02:29:56,880
operation so you may hear some of that

3023
02:30:02,070 --> 02:29:58,960
well just many congratulations keith

3024
02:30:04,230 --> 02:30:02,080
this is just just incredible

3025
02:30:06,710 --> 02:30:04,240
so um you hear about the preparations oh

3026
02:30:09,990 --> 02:30:06,720
let's oh sorry

3027
02:30:14,389 --> 02:30:12,710
you you heard about the definitions

3028
02:30:16,150 --> 02:30:14,399
oh i'm sorry i keep stepping i you know

3029
02:30:17,990 --> 02:30:16,160
just want to thank you guys for putting

3030
02:30:20,309 --> 02:30:18,000
these productions together this is

3031
02:30:20,319 --> 02:30:25,510
we're ready to continue with 666.023

3032
02:30:28,150 --> 02:30:27,429
and that flock looks good you're going

3033
02:30:35,110 --> 02:30:28,160
to

3034
02:30:38,870 --> 02:30:37,270
so as keith just said uh they are uh

3035
02:30:41,030 --> 02:30:38,880
they're getting ready to uh to do the

3036
02:30:42,710 --> 02:30:41,040
next things that will happen and uh and

3037
02:30:44,389 --> 02:30:42,720
please note that we will be bringing you

3038
02:30:45,590 --> 02:30:44,399
live coverage of these other major

3039
02:30:47,429 --> 02:30:45,600
deployments

3040
02:30:49,990 --> 02:30:47,439
so the uh the next one i believe will be

3041
02:30:51,510 --> 02:30:50,000
the uh the secondary mirror and uh

3042
02:30:52,710 --> 02:30:51,520
i don't know exactly the schedule of

3043
02:30:54,309 --> 02:30:52,720
these yet that depends on what the

3044
02:30:55,990 --> 02:30:54,319
engineers decide to do but we'll have

3045
02:30:57,590 --> 02:30:56,000
updates with that and you're gonna have

3046
02:30:59,110 --> 02:30:57,600
uh and then

3047
02:31:00,790 --> 02:30:59,120
the deployment of the full primary

3048
02:31:02,550 --> 02:31:00,800
mirror as well so that these things are

3049
02:31:03,830 --> 02:31:02,560
coming up later in the week just

3050
02:31:07,349 --> 02:31:03,840
listening to what's what they're saying

3051
02:31:08,870 --> 02:31:08,070
so

3052
02:31:10,550 --> 02:31:08,880
seeing as we have a little bit of a

3053
02:31:11,670 --> 02:31:10,560
pause for the mission operation center

3054
02:31:14,070 --> 02:31:11,680
i'm

3055
02:31:16,150 --> 02:31:14,080
now

3056
02:31:17,670 --> 02:31:16,160
uh because i think this is a wonderful

3057
02:31:19,590 --> 02:31:17,680
chance to say thank you so much for

3058
02:31:20,950 --> 02:31:19,600
everybody uh keith parish thank you so

3059
02:31:22,469 --> 02:31:20,960
much for watching

3060
02:31:23,510 --> 02:31:22,479
all of the amazing explanations you've

3061
02:31:25,510 --> 02:31:23,520
given us

3062
02:31:27,270 --> 02:31:25,520
and this is a historic day

3063
02:31:28,790 --> 02:31:27,280
the first major phase of the the

3064
02:31:30,790 --> 02:31:28,800
commissioning the deployment of the sun

3065
02:31:32,790 --> 02:31:30,800
shield is complete and successful and

3066
02:31:34,870 --> 02:31:32,800
i'm very excited so thank you so much

3067
02:31:37,750 --> 02:31:34,880
for joining us and

3068
02:31:39,190 --> 02:31:37,760
thank you sunshield team and go web go

3069
02:31:41,349 --> 02:31:39,200
go web

3070
02:31:42,950 --> 02:31:41,359
absolutely thank you for joining us

3071
02:31:49,940 --> 02:31:42,960
please please join us again later in the