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station this is houston are you ready

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houston station we're ready for the

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event

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national public radio this is mission

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control houston please call station for

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a voice check

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station this is national public radio

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got you loud and clear good to talk to

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you today ira

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that's great thank you we're very happy

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uh to talk to you uh can you both hear

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we've got you loud and clear

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we used to say in the old uh

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business five by five or something like

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that when i was

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a ham radio operator or something

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all right let's let's begin um

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uh

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let me ask you don first is does the

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does the view in space

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ever get tiring as you look out the

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windows tiring as you look out the

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window

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it never gets tiring to

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view earth from space or

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space from space just like

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any number of views

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from earth of earth never get tiring to

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see a sweeping mountain scene never gets

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tiring

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there's something about natural beauty

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that is

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inspiring to

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myself and i will generalize to human

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beings

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what question do you get asked most by

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people besides the bathroom question

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we'll do away with that one what

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question do people want to know most

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about your experience in in the space

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one real common question is what i miss

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most from earth being up here for a six

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month mission

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and

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one

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real astute

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student asked me

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the inverse question what will i miss

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most from space once i return to earth

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so i i thought that was a very clever

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play on one of the standard questions

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that people ask you

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dan burbank uh you were recently

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evacuated from the space station because

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of what turned out to be a close call

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with space debris

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give us an idea of what that experience

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well we actually had a we had a pretty

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good heads up about it um

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we've got tracking radars all over the

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world that keep track of orbital debris

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and it's things that are basically

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you know in in rough order magnitude

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about the size of your fist or bigger

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and there are tens of thousands of

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things that are tracked and whenever one

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gets kind of close to space station if

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we have ample time we will actually move

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the space station we'll actually do a

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burn a

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debris avoidance maneuver if you will

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and it'll open up that uh that distance

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of something a little bit more

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comfortable every now and then we'll get

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something that's uh that's either small

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enough that it only crops up uh very

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late or it uh crops up in such a way

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that the accuracy is uh is a little bit

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unknown and this particular case was

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kind of a combination of both there was

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a lot of uncertainty in it and it was

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also very late there wasn't time to

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actually do a burn that would have been

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effective and and opening up that

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distance to something more comfortable

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so for us we talked about it the night

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before actually probably a day and a

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half before and we knew there wasn't

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time to do the burn and certainly in the

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12 or so hours leading up to what we

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call the shelter in place

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we discussed what we'd have to do and

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from our perspective here on board it

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was actually fairly straightforward we

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essentially started from the forward

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part of the station worked our way back

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after where the soyuz vehicles are

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loaded located and we powered down

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systems we in the ground did an awful

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lot of the systems work there and we

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closed all the hatches to isolate as

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many of the modules as possible from

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each other and then we just waited until

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the closest point of approach with the

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the debris item and we were each in our

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respective soyuz capsules

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there uh uh there have been a couple of

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big solar flares recently that sent lots

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of potentially dangerous

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charged particles toward the earth what

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precautions do you have do you have in

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the space station to shield yourselves

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uh earth

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we're outside of the atmosphere so you

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don't have the protection from earth's

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atmosphere like you would on the surface

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of earth however we're still well within

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earth's magneto

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magnetosphere and that deflects a lot of

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these particles so that they don't

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uh

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pose a real threat we do have a higher

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level of radiation up here but we're

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still very much under the protection of

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mother earth and

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with very few exceptions life just goes

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on normally on space station

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with or without a solar proton event and

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what we do notice these events bring out

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wonderful displays of aurora

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let's talk about some of the interesting

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experiments that you folks are doing up

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there uh one in particular that

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that interests me is a a flame

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experiment we all know what a flame

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looks like on earth here and how it

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behaves

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but uh from pictures i've seen in zero g

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it looks totally different and how are

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well one of the racks this rack right

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here is a combustion rack for

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investigating various uh

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combustion processes where you're

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looking at the nitty-gritty details of

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how flames burn the rack right next to

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it is a glove box where i currently have

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a flame experiment set up there and

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basically

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flames have a healthy appetite for

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oxygen

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literally by fanning the flame and

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gravity helps fan the flame because of

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gravity driven

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convection the flame is hot the hot air

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rises cold air rushes in and and that

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brings fresh oxygen next to the flame if

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you try to burn a flame in

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weightlessness with no uh air motion

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around it it'll burn for a few seconds

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and snuff itself out so the whole

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dynamics of what happens with flames is

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different in a weightless environment

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and so

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the microgravity environment here on

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space station is a wonderful place to

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investigate fundamental aspects of

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combustion

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it's basically another experimental knob

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we can tweak

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and help uh figure out what's going on

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when something burns

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and you're saying that if you leave the

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flame to itself it will snuff itself out

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it is and i was doing some combustion

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experiments last week where we were

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burning little spheres of plastic they

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were poly methyl methacrylate it's the

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the clear plastic that you see things

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made out of and we were burning spheres

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of that and we were going to

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uh we had a fan blowing on it to add

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convection we're going to

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put the flame out by purging it with

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nitrogen which uh would should stop the

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flame it turns out it didn't stop the

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flame because the nitrogen entrained

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enough air in it that it that it just

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kept feeding uh

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sufficient oxygen to the burning plastic

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and what snuffed the plastic out in a

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matter of seconds was turning the fan

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off and the flame consumed all the

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oxygen around it and and it just went

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out on its own and i tell kids this is

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the space equivalent of what we tell our

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school kids of stop drop and roll if you

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happen to catch on fire but the space

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version of that is stop

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and float

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and of course you don't need to drop

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because there's no place to drop to

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very very interesting let's talk about

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another experiment is it is it true that

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you have like

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a little distillery

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up there in space you're doing a sort of

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a a malt experiment are you going to

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you know i

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heard about that but that experiment

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hasn't made it on space station yet and

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and and i don't really know what the

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details are i think it's just uh

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bringing some uh materials up and and

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maybe mashing them and then bringing

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them back down to earth i don't think

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there's any plans for distilling however

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we do have a distillation

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process here on space station a

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distillation apparatus and and can you

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guess what we distill with it there

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i'm afraid to ask

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i'm afraid to

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okay it's part of what we call our

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regenerative life support system which i

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like to refer to as the coffee machine

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because and it consists of three pieces

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of equipment we have a toilet

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we have this big piece of equipment

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that that the toilet is plumbed into

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which contains a distillation apparatus

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and then we have a galley

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and you go in and use the toilet and

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then this big piece of equipment goes

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chugga chugga chugga chugga chugga and

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then you go to the galley and you get

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yourself a bag of coffee and and so i

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like to refer to this as a coffee

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machine because it takes yesterday's

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coffee and turns it into today's coffee

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and the key element one of the key

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elements in that is a fractional

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distillation process and a normal

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process like that wouldn't work in a

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weightless environment because all our

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stills on earth require gravity to

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separate the vapor from the liquid

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and this uses rotation

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it

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uses a rotating body to uh help

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add centrifugal force to separate the

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vapor from the liquid and perform the

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distillation so it's really a neat piece

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of engineering research

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very very very very interesting to learn

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how that works

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uh dan burbank what are you hoping to

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learn through your integrated

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well that's an experiment that's got a

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lot of different aspects to it and

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fundamentally the the uh the main goal

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is to understand how humans um adapt to

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the weightless environment of space and

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uh and how we can mitigate the negative

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effects of that so for all of us here

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you know our bodies are just as strong

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as they need to be for the environment

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that we're operating in so if we don't

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exercise and we're on planet earth we

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will get flabby and we'll will lose

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muscle mass if you're up here in space

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and you don't exercise considerably

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you're since you're never counteracting

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the force of gravity walking around as

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you would on earth up here you would

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lose a lot of muscle mass you'd lose a

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lot of minerals from your bones

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your heart volume the the size of the

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heart muscle would get smaller and

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smaller and those would all be fine if

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you were going to live and essentially

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be a long-term creature of space but

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since we're going to return to planet

283
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earth sometime we'd like to uh to

284
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minimize that as much as possible so

285
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integrated cardiovascular kind of looks

286
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at a holistic

287
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um in a holistic way at how the body

288
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adapts to here and we do everything from

289
00:11:40,790 --> 00:11:38,880
ultrasound where we're scanning our

290
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hearts and our blood vessels

291
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we've got a lot of exercise components

292
00:11:47,190 --> 00:11:45,440
to this we're doing uh blood pressure um

293
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and um and

294
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a 24 hour actually 48 hour

295
00:11:55,110 --> 00:11:53,120
electrocardiogram to understand how from

296
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electrical standpoint how the human body

297
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is changing and all these things will

298
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help us leave low earth orbit and go on

299
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into deep space to go back to the moon

300
00:12:05,030 --> 00:12:03,200
long term and to go on to the asteroids

301
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and mars and i think that's

302
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a key part of what space station can do

303
00:12:10,230 --> 00:12:08,399
for us

304
00:12:12,310 --> 00:12:10,240
i had heard that there had been some

305
00:12:14,790 --> 00:12:12,320
talk at nasa i was reading about it this

306
00:12:17,190 --> 00:12:14,800
week and maybe you can talk about it

307
00:12:20,069 --> 00:12:17,200
about using the space station as a

308
00:12:22,710 --> 00:12:20,079
simulation for for going to mars a sort

309
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of a a long-term simulation mode of what

310
00:12:26,069 --> 00:12:24,560
the trip would be like and how it might

311
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affect your body

312
00:12:34,150 --> 00:12:32,710
yeah there's a lot of discussion about

313
00:12:36,150 --> 00:12:34,160
it right now and that's a that's a

314
00:12:37,829 --> 00:12:36,160
really interesting um

315
00:12:39,750 --> 00:12:37,839
part of it you know one thing that's

316
00:12:41,430 --> 00:12:39,760
fundamentally different about what we do

317
00:12:43,590 --> 00:12:41,440
here on space station and our experience

318
00:12:44,949 --> 00:12:43,600
here on space station from uh from what

319
00:12:47,030 --> 00:12:44,959
it would be like to go to the moon long

320
00:12:48,550 --> 00:12:47,040
term and certainly to go to mars now

321
00:12:50,069 --> 00:12:48,560
rough word of magnitude the moon's about

322
00:12:52,150 --> 00:12:50,079
a thousand times further from the earth

323
00:12:54,790 --> 00:12:52,160
than the space station mars is about

324
00:12:57,190 --> 00:12:54,800
another thousand times further uh you

325
00:12:58,949 --> 00:12:57,200
know than the moon is so you've got a

326
00:13:00,550 --> 00:12:58,959
lot of different aspects to what it's

327
00:13:03,110 --> 00:13:00,560
like to leave

328
00:13:05,110 --> 00:13:03,120
the close confines of planet earth here

329
00:13:06,870 --> 00:13:05,120
we essentially have a permanent

330
00:13:09,509 --> 00:13:06,880
logistics stream from earth if something

331
00:13:12,150 --> 00:13:09,519
breaks on station as you know all too

332
00:13:13,910 --> 00:13:12,160
frequently will happen um we've always

333
00:13:15,190 --> 00:13:13,920
got the ability to fly new parts if

334
00:13:16,550 --> 00:13:15,200
you're going to the moon they're going

335
00:13:18,389 --> 00:13:16,560
to be there long term if you're going to

336
00:13:20,949 --> 00:13:18,399
mars you can't do that you're going to

337
00:13:23,350 --> 00:13:20,959
basically rely on yourself

338
00:13:25,350 --> 00:13:23,360
now the psychological aspect of going to

339
00:13:28,470 --> 00:13:25,360
mars there's another whole wrinkle to

340
00:13:31,829 --> 00:13:28,480
that and that is the uh the the time it

341
00:13:34,470 --> 00:13:31,839
takes to transmit a a signal from earth

342
00:13:36,310 --> 00:13:34,480
to the crew on mars or vice versa and

343
00:13:38,710 --> 00:13:36,320
you're limited by the speed of light and

344
00:13:40,870 --> 00:13:38,720
it'll be a long long time earth will

345
00:13:43,189 --> 00:13:40,880
become vanishingly small it'll almost be

346
00:13:45,350 --> 00:13:43,199
you know be indistinguishable from a lot

347
00:13:47,590 --> 00:13:45,360
of the brighter stars so you'll feel

348
00:13:49,509 --> 00:13:47,600
very remote so the psychological part of

349
00:13:51,350 --> 00:13:49,519
it would be kind of an interesting thing

350
00:13:53,350 --> 00:13:51,360
to simulate that on station that would

351
00:13:55,829 --> 00:13:53,360
probably involve

352
00:13:57,910 --> 00:13:55,839
essentially introducing a time lag

353
00:14:00,150 --> 00:13:57,920
between when the crew calls the ground

354
00:14:02,949 --> 00:14:00,160
and when the ground responds it would

355
00:14:04,949 --> 00:14:02,959
involve you know potentially

356
00:14:06,470 --> 00:14:04,959
limiting the crew's view out the window

357
00:14:09,110 --> 00:14:06,480
so you're not seeing planet earth you

358
00:14:11,509 --> 00:14:09,120
don't feel physically as close to it and

359
00:14:13,590 --> 00:14:11,519
it might involve even going so far as to

360
00:14:16,550 --> 00:14:13,600
letting the crew deal with

361
00:14:18,790 --> 00:14:16,560
emergencies and and system malfunctions

362
00:14:21,189 --> 00:14:18,800
and work the way through them

363
00:14:23,110 --> 00:14:21,199
to a greater and a more independent

364
00:14:24,710 --> 00:14:23,120
degree than we currently might on space

365
00:14:26,150 --> 00:14:24,720
station and

366
00:14:27,670 --> 00:14:26,160
there's a lot of discussion about how

367
00:14:30,150 --> 00:14:27,680
you might do that it might be something

368
00:14:31,110 --> 00:14:30,160
that would be applicable but i don't

369
00:14:33,509 --> 00:14:31,120
know

370
00:14:36,550 --> 00:14:33,519
yet about any immediate near-term

371
00:14:38,710 --> 00:14:36,560
concrete steps in that direction

372
00:14:41,910 --> 00:14:38,720
don pettit you're going to be involved

373
00:14:42,949 --> 00:14:41,920
in the tracking and capture of elon

374
00:14:45,590 --> 00:14:42,959
musk's

375
00:14:48,150 --> 00:14:45,600
spacex commercial resupply ship which is

376
00:14:50,629 --> 00:14:48,160
actually a an historic event the the

377
00:14:52,470 --> 00:14:50,639
dragon capsule in a few days what's

378
00:14:58,069 --> 00:14:52,480
what's going to be your exact role and

379
00:15:02,710 --> 00:15:00,069
uh the short answer to looking forward

380
00:15:06,069 --> 00:15:02,720
to it is yes it's going to be

381
00:15:09,110 --> 00:15:06,079
really exciting to have uh a u.s

382
00:15:13,829 --> 00:15:11,910
unmanned vehicle come and and a

383
00:15:16,310 --> 00:15:13,839
rendezvous was stationed and then we

384
00:15:18,710 --> 00:15:16,320
will lasso it with the arm and berth it

385
00:15:21,110 --> 00:15:18,720
to one of our common birthing ports

386
00:15:24,150 --> 00:15:21,120
and so that is going to be a real neat

387
00:15:25,670 --> 00:15:24,160
piece of technology plus the the idea

388
00:15:27,910 --> 00:15:25,680
that we can have these vehicles come up

389
00:15:30,389 --> 00:15:27,920
and bring needed supplies so so all of

390
00:15:32,870 --> 00:15:30,399
that aspect is really really good in

391
00:15:35,509 --> 00:15:32,880
terms of what we're doing to prepare

392
00:15:38,069 --> 00:15:35,519
uh andre kuipers and i are going to be

393
00:15:38,949 --> 00:15:38,079
doing the robotics to

394
00:15:42,230 --> 00:15:38,959
to

395
00:15:45,430 --> 00:15:42,240
lasso the dragon vehicle and then birth

396
00:15:47,670 --> 00:15:45,440
it to one of our ports and i'll be

397
00:15:49,749 --> 00:15:47,680
flying the arm for the lasso part and

398
00:15:51,829 --> 00:15:49,759
andre will be flying the arm for the

399
00:15:53,509 --> 00:15:51,839
birthing to space station so we're

400
00:15:58,310 --> 00:15:53,519
sharing the duties and backing each

401
00:16:00,470 --> 00:15:58,320
other up for this uh approach uh uh

402
00:16:02,790 --> 00:16:00,480
track and capture and then birthing the

403
00:16:05,350 --> 00:16:02,800
station

404
00:16:07,030 --> 00:16:05,360
having having lived i'll address this to

405
00:16:09,269 --> 00:16:07,040
both of you having lived up there for

406
00:16:12,150 --> 00:16:09,279
for many months and having prepared so

407
00:16:14,310 --> 00:16:12,160
long for the your your voyage in your in

408
00:16:16,790 --> 00:16:14,320
your life in the space station

409
00:16:18,550 --> 00:16:16,800
what did you find that you were not

410
00:16:21,670 --> 00:16:18,560
quite prepared for what are some of the

411
00:16:23,749 --> 00:16:21,680
unexpected things that that you say gee

412
00:16:26,470 --> 00:16:23,759
you know i can pass this knowledge along

413
00:16:29,189 --> 00:16:26,480
to the next person or i found out more

414
00:16:32,710 --> 00:16:29,199
about myself from being up here for this

415
00:16:39,350 --> 00:16:36,230
i i i that's a good question and i've

416
00:16:41,910 --> 00:16:39,360
got a little example one of these small

417
00:16:43,990 --> 00:16:41,920
details that you can never train for and

418
00:16:45,829 --> 00:16:44,000
you are just surprised when you come up

419
00:16:48,790 --> 00:16:45,839
to orbit that it could be this way and

420
00:16:51,269 --> 00:16:48,800
it has to do with our trash cans our

421
00:16:53,030 --> 00:16:51,279
waste baskets and we have these really

422
00:16:55,990 --> 00:16:53,040
nice weight baskets

423
00:16:58,629 --> 00:16:56,000
and if you open up the lid to put a

424
00:17:00,069 --> 00:16:58,639
small piece of something in there

425
00:17:01,829 --> 00:17:00,079
that little small piece of something

426
00:17:03,670 --> 00:17:01,839
will just be floating right under that

427
00:17:05,829 --> 00:17:03,680
lid and then the next person opens that

428
00:17:07,350 --> 00:17:05,839
lid up all these little small pieces

429
00:17:08,230 --> 00:17:07,360
come floating out and it makes a big

430
00:17:11,029 --> 00:17:08,240
mess

431
00:17:12,789 --> 00:17:11,039
and so the wastebaskets are great for a

432
00:17:14,549 --> 00:17:12,799
big chunk of something but all these

433
00:17:16,870 --> 00:17:14,559
little tiny things like little pieces of

434
00:17:18,470 --> 00:17:16,880
tape and and little little strings and

435
00:17:20,309 --> 00:17:18,480
things like that you don't want to put

436
00:17:22,069 --> 00:17:20,319
them in a wastebasket or they just make

437
00:17:23,429 --> 00:17:22,079
a mess for the next guy

438
00:17:25,110 --> 00:17:23,439
so what we do

439
00:17:27,110 --> 00:17:25,120
is we take one of our little wet wipe

440
00:17:28,710 --> 00:17:27,120
containers which is just like the wet

441
00:17:30,470 --> 00:17:28,720
wipes that you use for wiping baby

442
00:17:32,710 --> 00:17:30,480
bottoms on earth and we use the same

443
00:17:34,789 --> 00:17:32,720
ones up here they come in a little

444
00:17:36,789 --> 00:17:34,799
plastic pouch with a little

445
00:17:38,789 --> 00:17:36,799
lid a little doorway that you can open

446
00:17:41,190 --> 00:17:38,799
up and when we have one of those things

447
00:17:43,669 --> 00:17:41,200
empty we stick it on the wall and we use

448
00:17:46,150 --> 00:17:43,679
it for a small items

449
00:17:47,669 --> 00:17:46,160
waste basket and you can open that

450
00:17:49,110 --> 00:17:47,679
little lid you can put little tiny

451
00:17:50,470 --> 00:17:49,120
things in there and close the lid and

452
00:17:52,950 --> 00:17:50,480
you don't need to worry about all of

453
00:17:55,029 --> 00:17:52,960
these seeds swimming out and and i never

454
00:17:57,029 --> 00:17:55,039
would have thought that that you'd do

455
00:18:00,150 --> 00:17:57,039
that you'd use something like this for a

456
00:18:02,789 --> 00:18:00,160
little trash can and it's it's uh it's

457
00:18:04,070 --> 00:18:02,799
an elegant solution to the problem and

458
00:18:05,909 --> 00:18:04,080
these are the kinds of things that you

459
00:18:08,630 --> 00:18:05,919
only learn once

460
00:18:14,310 --> 00:18:08,640
once you show up in space and dan what

461
00:18:18,070 --> 00:18:16,950
yeah i guess um if if i were to think

462
00:18:19,669 --> 00:18:18,080
back on the thing that probably

463
00:18:21,909 --> 00:18:19,679
surprised me the most you know even

464
00:18:24,710 --> 00:18:21,919
having been up here twice on on shuttle

465
00:18:26,630 --> 00:18:24,720
missions is how difficult it is to keep

466
00:18:27,750 --> 00:18:26,640
track of everything that you have on a

467
00:18:29,430 --> 00:18:27,760
shuttle mission it's a little bit

468
00:18:32,230 --> 00:18:29,440
smaller volume you do spend time in the

469
00:18:34,549 --> 00:18:32,240
station but you're you don't spend as

470
00:18:36,150 --> 00:18:34,559
much time here that you don't get

471
00:18:38,870 --> 00:18:36,160
necessarily

472
00:18:40,710 --> 00:18:38,880
exquisitely good about keeping track of

473
00:18:42,390 --> 00:18:40,720
things and up here you know the first

474
00:18:44,950 --> 00:18:42,400
couple of weeks that were around

475
00:18:47,190 --> 00:18:44,960
uh it is so easy for things even that

476
00:18:49,430 --> 00:18:47,200
are velcroed and attached and so forth

477
00:18:51,190 --> 00:18:49,440
to just fly away get bumped and jostled

478
00:18:52,630 --> 00:18:51,200
you know we we joke about you know new

479
00:18:54,789 --> 00:18:52,640
crews coming onboard space station

480
00:18:57,990 --> 00:18:54,799
shuttle crews included creating a wake

481
00:18:59,909 --> 00:18:58,000
of swimming parts and cameras and

482
00:19:02,390 --> 00:18:59,919
notebooks and procedures and so forth

483
00:19:04,070 --> 00:19:02,400
behind them when they go by um it gets

484
00:19:06,070 --> 00:19:04,080
to the point up here where everything

485
00:19:07,110 --> 00:19:06,080
that you do you're constantly thinking

486
00:19:08,549 --> 00:19:07,120
planning

487
00:19:10,230 --> 00:19:08,559
or at least in the back your mind how to

488
00:19:11,830 --> 00:19:10,240
keep track of everything and and if

489
00:19:13,990 --> 00:19:11,840
you're going to take something apart to

490
00:19:15,990 --> 00:19:14,000
fix it for example keeping track of

491
00:19:17,990 --> 00:19:16,000
bolts and washers and nuts and having a

492
00:19:19,909 --> 00:19:18,000
little piece of tape stage by and having

493
00:19:21,270 --> 00:19:19,919
all your tools organized is something

494
00:19:23,029 --> 00:19:21,280
that's kind of part and parcel with your

495
00:19:25,110 --> 00:19:23,039
life up here

496
00:19:27,270 --> 00:19:25,120
one last question dan burbank you're

497
00:19:29,110 --> 00:19:27,280
going to be coming back in a few days is

498
00:19:31,029 --> 00:19:29,120
adjusting to life back on earth going to

499
00:19:32,230 --> 00:19:31,039
be difficult are you how are you looking

500
00:19:33,990 --> 00:19:32,240
forward to it are you going to be

501
00:19:38,150 --> 00:19:34,000
nostalgic about missing the space

502
00:19:40,470 --> 00:19:39,270
i think for everybody that's had a

503
00:19:42,390 --> 00:19:40,480
chance to be up here i think you're

504
00:19:43,909 --> 00:19:42,400
always going to have just a little piece

505
00:19:45,430 --> 00:19:43,919
of your heart that's uh that's still

506
00:19:47,190 --> 00:19:45,440
here that you're going to miss these

507
00:19:49,830 --> 00:19:47,200
views miss just the

508
00:19:51,669 --> 00:19:49,840
the the nature of life in space

509
00:19:53,909 --> 00:19:51,679
i'm really looking forward to seeing my

510
00:19:56,230 --> 00:19:53,919
family again family and friends being

511
00:19:58,549 --> 00:19:56,240
able to to see them again will be great

512
00:20:00,390 --> 00:19:58,559
the thing that'll be really hard is by

513
00:20:02,870 --> 00:20:00,400
at least by all reports is getting used

514
00:20:04,310 --> 00:20:02,880
to uh to planet earth's gravity and

515
00:20:05,909 --> 00:20:04,320
getting used to fighting it all the time

516
00:20:08,149 --> 00:20:05,919
we spend a lot of time exercising up

517
00:20:09,909 --> 00:20:08,159
here but i wonder if it'll ever really

518
00:20:13,110 --> 00:20:09,919
be enough to make those first couple of

519
00:20:15,270 --> 00:20:13,120
weeks as easy as i hope they would be

520
00:20:16,789 --> 00:20:15,280
well commander burbank and flight

521
00:20:19,029 --> 00:20:16,799
engineer don pettit i want to thank you

522
00:20:21,590 --> 00:20:19,039
both for taking time to be with us today

523
00:20:23,510 --> 00:20:21,600
and and good luck to you and and and

524
00:20:25,029 --> 00:20:23,520
welcome back when you get back to earth

525
00:20:26,630 --> 00:20:25,039
thank you for joining us on science

526
00:20:30,230 --> 00:20:26,640
friday from the international space

527
00:20:37,350 --> 00:20:31,750
ira thank you it's great talking to you

528
00:20:42,789 --> 00:20:39,750
station this is houston acr thank you

529
00:20:44,789 --> 00:20:42,799
that concludes the event

530
00:20:46,870 --> 00:20:44,799
thank you national public radio station