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welcome everybody to mission control

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houston this is the international space

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station flight control room we'd like to

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welcome the alvarado junior high school

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in

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public affairs office here at the

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johnson space center for nasa and

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joining me is megan hampshire hasher and

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megan is a space station flight software

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engineer i don't know i think i got that

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right

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and

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so she knows uh quite a bit about

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how the software it works and testing

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and simulation and getting it ready to

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actually work on board the international

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space station which is flying above us

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250 miles so

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we're excited to have you guys join us

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today uh here in mission control and i

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think we're both gonna try to answer

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michael we're ready whenever you guys

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are

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do the astronauts ever get tired of

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floating around

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personally if i was in space i wouldn't

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get tired i don't think but i couldn't

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answer that because i'm not an astronaut

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i think that astronauts don't get tired

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of floating around in space in fact it's

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pretty easy to do that if you've ever

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seen them on

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television

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it's pretty much effortless after they

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learn not to bump into things in fact

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you're looking right now at a live

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picture inside the station of one of the

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new crew members on board as he's

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working on a science experiment uh in

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the station so i don't think they get

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tired at all of floating around

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hello my name is cameron gunn and

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if you held your breath in space would

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you possibly float down to the floor

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like in a pool

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i don't think you would typically they

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are breathing normally and they're not

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moving around a whole lot unless they're

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pushing off something because they are

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weightless

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they do practice some of their extra

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vehicular activities in a pool

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because it can help simulate weakness

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weightlessness but

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they don't actually sink when they

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my name is mallory sotter and if a

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damage occurs can you find a way to

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repair or do you have to leave right

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away

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that's a good question

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and i think in general they try to

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repair it if at all possible i know last

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year in the news i think it was a in the

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fall time frame they had a problem with

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one of the

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power

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contraptions and

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they actually put out in the news that

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they used a toothbrush and some wire to

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help loosen a bolt so that they could

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replace the unit

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right but

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you know there's a lot of contingencies

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and precautions that crews trained for

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um in order to uh

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repair systems onboard the station it's

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a very big complex and and uh so we're

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trained pretty heavily these crew

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members to fix just about anything on

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the station so

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my name is drew did the astronauts

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control the nevada navigational system

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on the iss

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a lot of the control of the navigation

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system is actually done by computers in

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the flight software

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the controllers in mission control and

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the crew can send commands to do

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maneuvers but the software actually is

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the thing that does and performs the

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maneuvers with the hardware

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and if we uh if we have a wide shot of

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this room there's a flight control

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position

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actually in here that

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manages the flight software that watches

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over all of those computer systems the

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the overall command and control system

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right right

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my name is ashley ramsey when you get

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back home on earth does it take time to

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adjust back to gravity and if it does

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how long does it take to get back to

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normal

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well it depends on what they're

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adjusting from but typically it does

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take them a little bit of time to adjust

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i think on average they said in about

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three days any kind of nauseousness or

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anything like that from returning

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it has dissipated but they still have to

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work on regaining the muscle strength

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and bone strength that they had prior to

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going up in space because they do lose

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some

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of that while they're up there since

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they're not using their body like they

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normally do here on earth we've learned

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a lot after so many years of space

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flight and especially on these long

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duration flights like this

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the flight doctors have a

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very strict exercise protocol for the

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crew members on board so that when they

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do come home

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tries to reduce that time that it

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actually takes to re-adapt re-adapt to

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the one gravity environment that we feel

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right here so

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on the order they i think they have a

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protocol of about 45 days or so after

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landing that they kind of use as a rule

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of thumb but that's not hard and fast

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but that's a that's a great question

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my name is hannah wright

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what is the biggest worry about going to

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space

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i think in general the biggest worry is

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keeping the humans that are in space

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alive

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and the environment and space is vastly

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different than here on earth and so they

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have to worry about a lot of the

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environmental things making sure there's

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air up there making sure

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that it is a livable

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environment for them because you're

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going into a vacuum where there's

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my name is brandon and i want to know

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what college you have to go to to work

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at nasa and be an astronaut and what you

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have to study

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now i personally have not heard of any

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specific colleges that nasa says you

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have to go to i think more what they

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look at is what classes you've taken and

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how you've done in them

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for a lot of the people i work with

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personally they have degrees in

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engineering or physics or some kind of

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science or math or they have a computer

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science degree and a lot of the classes

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they look at you taking then are the

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sciences the engineering and the

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computer programming now i know they

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also have a business division here so

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that somebody actually manages the money

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for the engineers

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and so i know there are a lot of people

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who get their mbas

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or their business degrees to be able to

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work here so there's a there's a whole

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vast array of the type of degrees that

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you can study to work in the space

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industry if you want to the aerospace

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industry so but math and science is kind

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of a staple because if you understand

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those

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kind of

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studying habits then that can translate

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into just about anything you do in the

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aerospace industry and i know for me

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personally a couple of my physics

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mechanic classes so like the orbital

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mechanics you know how things move have

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come in handy a lot i've had a great

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deal of help in that regard great

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question

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hi my name is sierra how does the iss

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get out of the way of space debris or

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asteroids that's a good question

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they have thrusters on board the space

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station and they also have vehicles

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docked that have thrusters and they use

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those to

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move out of the way of debris providing

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they can find it ahead of time

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but they've got lots of people keeping

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eye and eye out on all of the debris

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that is up there exactly there's

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we track

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space debris of a certain size um that

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we can tell when it's going to come

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anywhere in the vicinity of the station

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and so

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and that's watched very very carefully

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and so the station as megan says can can

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actually maneuver ahead of time and be

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in a little bit different orbit

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so that it will be completely out of the

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way of any threat like that so that's a

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good question

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hi my name is rachel what are the first

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steps if there was a major problem with

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the computers

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that control the isa i think this is

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probably megan's area yeah

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there are a lot of computers aboard the

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space station and i think the last count

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i had heard was something like 52

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different computers

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now they're not all running at the same

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time we have a lot of backup computers

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especially for the command and control

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computers the ones that interface with

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everything there are three different

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computers one is used at a time one is

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on standby in case the first computer

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goes down and the other one's on standby

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and then on top of that we have

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another system in place that would go to

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redirect things to a different system so

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that we could still command and control

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the space station and i think the

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easiest answer is we have lots of

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computers so that we can replace things

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as needed

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and one of the

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good old standbys is to power cycle the

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computer like you would if sometimes you

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get a blue screen on your computer where

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you turn it off let it sit for a couple

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minutes and then turn it back on to try

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hi i'm sam um

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when descending to the earth does the

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size of an object determine whether or

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not it will burn up

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yes it it's actually dependent on a

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couple things the size of the object and

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how fast it's entering the atmosphere if

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it's going pretty slowly it's more

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likely to hit the surface of the earth

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because

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it's not creating as much friction for

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it to burn up

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and i think the last figure i saw was if

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it was under 25 meters in diameter it's

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more likely to

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burn up in the earth's atmosphere

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we have uh some visiting vehicles that

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we call them that deliver cargo to the

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station that burn up in the atmosphere

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and there some of those pieces make it

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to earth but they target the re-entry

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so that it's in the ocean and it and it

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would not harm anybody on the ground but

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most of the pieces burn up because of

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that friction that megan talked about

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hi my name is mason stevens is the isa

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does the iss fly in space or did it just

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stay in orbit around earth

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the iss stays in orbit around the earth

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um

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you could really be considering the iss

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to be falling towards earth and is

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making corrections so that it doesn't

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actually go towards earth

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but in the early days when it was being

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assembled

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parts of the space station did fly

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yeah it's a it's a like megan says it's

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a constant free fall but it's traveling

283
00:10:34,630 --> 00:10:32,480
17 500 miles per hour

284
00:10:37,910 --> 00:10:34,640
so it's constantly falling around the

285
00:10:40,550 --> 00:10:37,920
earth um at the altitude that it's at

286
00:10:42,230 --> 00:10:40,560
right now and so uh it never actually

287
00:10:44,310 --> 00:10:42,240
comes down to the earth and we adjust

288
00:10:46,470 --> 00:10:44,320
its orbit a little bit here and there

289
00:10:47,990 --> 00:10:46,480
like we did yesterday afternoon

290
00:10:50,310 --> 00:10:48,000
fired some thrusters on one of the

291
00:10:51,670 --> 00:10:50,320
russian vehicles on the station just to

292
00:10:53,430 --> 00:10:51,680
tweak its

293
00:10:55,269 --> 00:10:53,440
orbit just slightly

294
00:10:56,630 --> 00:10:55,279
which we do periodically to set the

295
00:10:59,750 --> 00:10:56,640
stage for

296
00:11:01,509 --> 00:10:59,760
rendezvous with upcoming vehicles and so

297
00:11:03,509 --> 00:11:01,519
so we do adjust the orbit every once in

298
00:11:05,670 --> 00:11:03,519
a while but it's it's it's i guess it's

299
00:11:07,590 --> 00:11:05,680
always flying but it's always free

300
00:11:09,590 --> 00:11:07,600
falling around the earth too so it's

301
00:11:14,230 --> 00:11:09,600
kind of up to how you how you define the

302
00:11:18,710 --> 00:11:16,630
um hi my name is seda hip leo what

303
00:11:21,350 --> 00:11:18,720
exactly are you studying in space what

304
00:11:23,110 --> 00:11:21,360
can be studied and why

305
00:11:24,550 --> 00:11:23,120
there are actually a lot of things being

306
00:11:26,310 --> 00:11:24,560
studied in space one of the biggest

307
00:11:28,710 --> 00:11:26,320
things i think right now is how the

308
00:11:30,630 --> 00:11:28,720
human body will react to being in space

309
00:11:32,550 --> 00:11:30,640
because one of nasa's goals in the long

310
00:11:34,550 --> 00:11:32,560
term is to go off to mars

311
00:11:35,910 --> 00:11:34,560
and people will be in space for a long

312
00:11:37,829 --> 00:11:35,920
amount of time

313
00:11:40,150 --> 00:11:37,839
for that and so they want to know what

314
00:11:42,550 --> 00:11:40,160
they can do to help the astronauts to be

315
00:11:44,710 --> 00:11:42,560
successful in that and i know they've

316
00:11:47,350 --> 00:11:44,720
also got experiments going on for

317
00:11:48,790 --> 00:11:47,360
radiation and different materials for

318
00:11:50,550 --> 00:11:48,800
how they will help protect the

319
00:11:52,629 --> 00:11:50,560
astronauts from radiation from things

320
00:11:54,710 --> 00:11:52,639
like solar flares from the sun

321
00:11:57,430 --> 00:11:54,720
which provide a lot of radiation then to

322
00:11:59,990 --> 00:11:57,440
the space station when that happens

323
00:12:03,829 --> 00:12:00,000
i think there's also a bunch of

324
00:12:05,430 --> 00:12:03,839
physical science experiments up there

325
00:12:08,069 --> 00:12:05,440
pretty much anything that can be studied

326
00:12:10,629 --> 00:12:08,079
in microgravity they're trying

327
00:12:13,030 --> 00:12:10,639
absolutely it's uh now that it's a

328
00:12:14,710 --> 00:12:13,040
operational laboratory it has been but

329
00:12:17,030 --> 00:12:14,720
now that it's completed in terms of

330
00:12:19,269 --> 00:12:17,040
assembly uh we have six crew members up

331
00:12:21,030 --> 00:12:19,279
there right now and they're uh pretty

332
00:12:22,949 --> 00:12:21,040
much all six in different areas of the

333
00:12:25,350 --> 00:12:22,959
space station which is a very huge

334
00:12:28,150 --> 00:12:25,360
complex if you picture a

335
00:12:29,829 --> 00:12:28,160
football field the station flying low

336
00:12:32,069 --> 00:12:29,839
over that football field would basically

337
00:12:33,670 --> 00:12:32,079
cover the whole football field so and

338
00:12:35,030 --> 00:12:33,680
there's three

339
00:12:36,550 --> 00:12:35,040
at least three or four different

340
00:12:38,870 --> 00:12:36,560
scientific laboratories where

341
00:12:41,750 --> 00:12:38,880
experiments can be going on all the time

342
00:12:43,990 --> 00:12:41,760
and the crew actually can can be working

343
00:12:46,470 --> 00:12:44,000
directly with an experiment or activate

344
00:12:48,949 --> 00:12:46,480
an experiment and then the scientist on

345
00:12:51,190 --> 00:12:48,959
the ground can interact with it from the

346
00:12:53,190 --> 00:12:51,200
ground and then have the crew

347
00:12:54,629 --> 00:12:53,200
provide some assistance where needed so

348
00:12:55,829 --> 00:12:54,639
it's a very interactive and

349
00:12:56,870 --> 00:12:55,839
collaborative

350
00:12:59,110 --> 00:12:56,880
process

351
00:13:02,310 --> 00:12:59,120
with science experiments on board good

352
00:13:06,710 --> 00:13:04,629
i'm landon what would happen is someone

353
00:13:08,150 --> 00:13:06,720
that lived on the space station did not

354
00:13:09,910 --> 00:13:08,160
work out

355
00:13:13,110 --> 00:13:09,920
how would that affect them when they got

356
00:13:14,150 --> 00:13:13,120
back on or back to earth that that's a

357
00:13:17,110 --> 00:13:14,160
very

358
00:13:18,710 --> 00:13:17,120
good question and timely question yes uh

359
00:13:21,590 --> 00:13:18,720
the astronauts if they don't actually

360
00:13:23,030 --> 00:13:21,600
work out in space their muscles and

361
00:13:25,590 --> 00:13:23,040
their bones will actually start to

362
00:13:27,190 --> 00:13:25,600
weaken a lot more significantly

363
00:13:28,870 --> 00:13:27,200
than they do

364
00:13:30,550 --> 00:13:28,880
by working out and i think

365
00:13:32,870 --> 00:13:30,560
i've read somewhere that astronauts have

366
00:13:35,110 --> 00:13:32,880
to work out up to four hours a day every

367
00:13:36,870 --> 00:13:35,120
day to make sure that their muscles and

368
00:13:38,230 --> 00:13:36,880
bones don't weaken because what happens

369
00:13:39,990 --> 00:13:38,240
is when you get back to earth and you've

370
00:13:42,470 --> 00:13:40,000
got the gravity all of a sudden you've

371
00:13:45,030 --> 00:13:42,480
got a lot of pressure on those bones and

372
00:13:46,710 --> 00:13:45,040
muscles and if you don't work out it

373
00:13:48,389 --> 00:13:46,720
could cause breaks in your bones and

374
00:13:49,990 --> 00:13:48,399
that kind of stuff and it ends up being

375
00:13:52,470 --> 00:13:50,000
a really bad and painful thing for the

376
00:13:54,230 --> 00:13:52,480
astronauts and it kind of is part of one

377
00:13:55,269 --> 00:13:54,240
of the early questions that was asked

378
00:13:57,269 --> 00:13:55,279
about

379
00:13:59,189 --> 00:13:57,279
how long does it take to

380
00:14:01,350 --> 00:13:59,199
get back to normal once you get back on

381
00:14:02,790 --> 00:14:01,360
the earth and and that's that's a great

382
00:14:04,949 --> 00:14:02,800
question because

383
00:14:06,870 --> 00:14:04,959
we've learned over the years how to

384
00:14:09,030 --> 00:14:06,880
counteract the changes that occur in

385
00:14:11,750 --> 00:14:09,040
space those same changes happen to us

386
00:14:14,230 --> 00:14:11,760
here on earth as we age over years and

387
00:14:16,470 --> 00:14:14,240
years it happens to astronauts and

388
00:14:18,949 --> 00:14:16,480
within a couple of days sometimes some

389
00:14:21,269 --> 00:14:18,959
of the changes that occur and so

390
00:14:23,990 --> 00:14:21,279
learning how to counteract that in space

391
00:14:25,509 --> 00:14:24,000
helps us on the ground in developing

392
00:14:28,389 --> 00:14:25,519
um you know

393
00:14:29,990 --> 00:14:28,399
protocols exercise protocols for

394
00:14:32,949 --> 00:14:30,000
maintaining your systems even on the

395
00:14:35,990 --> 00:14:32,959
ground as you age over time so exercise

396
00:14:37,110 --> 00:14:36,000
is very very important in rehabilitation

397
00:14:38,710 --> 00:14:37,120
to

398
00:14:42,389 --> 00:14:38,720
what we feel here on earth again good

399
00:14:46,949 --> 00:14:44,790
hi i'm caiman graves how do you know

400
00:14:48,870 --> 00:14:46,959
where you're going when you cannot tell

401
00:14:50,949 --> 00:14:48,880
if you're upside down

402
00:14:53,269 --> 00:14:50,959
that's a good question

403
00:14:54,710 --> 00:14:53,279
i actually read a lot of the labels on

404
00:14:56,550 --> 00:14:54,720
the space station are all facing a

405
00:14:58,790 --> 00:14:56,560
certain direction and so that's one way

406
00:15:01,110 --> 00:14:58,800
they can tell is by what way the words

407
00:15:03,910 --> 00:15:01,120
are facing as to whether they are facing

408
00:15:05,590 --> 00:15:03,920
what's considered up or down

409
00:15:07,509 --> 00:15:05,600
if they are near a window they can look

410
00:15:09,030 --> 00:15:07,519
to see what's out the window to know if

411
00:15:11,110 --> 00:15:09,040
they're looking towards earth or if

412
00:15:14,069 --> 00:15:11,120
they're looking towards

413
00:15:15,750 --> 00:15:14,079
pretty much space or the sun or

414
00:15:16,949 --> 00:15:15,760
whatever it is that that window is

415
00:15:20,230 --> 00:15:16,959
pointing to

416
00:15:21,750 --> 00:15:20,240
and i think they in general their mind

417
00:15:23,990 --> 00:15:21,760
comes up with some kind of sense of

418
00:15:25,750 --> 00:15:24,000
what's up and what's down

419
00:15:27,990 --> 00:15:25,760
yeah that's one beauty about the space

420
00:15:29,590 --> 00:15:28,000
station is is there for them there's no

421
00:15:31,590 --> 00:15:29,600
up or down in terms of their working

422
00:15:34,470 --> 00:15:31,600
environment or sleeping

423
00:15:37,030 --> 00:15:34,480
that type of thing but um but it is like

424
00:15:38,710 --> 00:15:37,040
megan says it is oriented a certain way

425
00:15:41,590 --> 00:15:38,720
in terms of labeling so they do have

426
00:15:44,150 --> 00:15:41,600
that sense of up or down but in the true

427
00:15:46,150 --> 00:15:44,160
sense of the word the way you and i

428
00:15:48,069 --> 00:15:46,160
feel it on the ground there's definitely

429
00:15:51,829 --> 00:15:48,079
up or down for us but not for them up

430
00:15:56,629 --> 00:15:54,389
hello my name is garen shackleford what

431
00:15:59,030 --> 00:15:56,639
materials do you use so that you don't

432
00:16:00,629 --> 00:15:59,040
burn during your descent

433
00:16:02,790 --> 00:16:00,639
that's a good question and i actually

434
00:16:04,790 --> 00:16:02,800
went online last night to see if i could

435
00:16:06,470 --> 00:16:04,800
find out what the soyuz vehicle actually

436
00:16:08,150 --> 00:16:06,480
uses because that's what typically is

437
00:16:09,030 --> 00:16:08,160
flying our astronauts up and down right

438
00:16:10,150 --> 00:16:09,040
now

439
00:16:13,350 --> 00:16:10,160
and

440
00:16:15,430 --> 00:16:13,360
i honestly other than some lightweight

441
00:16:17,269 --> 00:16:15,440
high temperature material that was all i

442
00:16:19,269 --> 00:16:17,279
could actually find on that i know on

443
00:16:20,150 --> 00:16:19,279
our space shuttle we had

444
00:16:24,949 --> 00:16:20,160
in

445
00:16:27,030 --> 00:16:24,959
and they also had thermal blankets and

446
00:16:29,990 --> 00:16:27,040
that kind of stuff to help give more

447
00:16:32,470 --> 00:16:30,000
layers between the astronauts and

448
00:16:35,990 --> 00:16:32,480
the re-entry all right

449
00:16:39,829 --> 00:16:37,590
my name is nikki morgan how much

450
00:16:43,350 --> 00:16:39,839
training do the astronauts on the iss

451
00:16:45,269 --> 00:16:43,360
have to have to prepare for emergencies

452
00:16:47,189 --> 00:16:45,279
the astronauts go through years of

453
00:16:49,670 --> 00:16:47,199
training before they even officially

454
00:16:51,509 --> 00:16:49,680
become astronauts they go through a lot

455
00:16:53,110 --> 00:16:51,519
of classroom training a lot of survival

456
00:16:54,790 --> 00:16:53,120
skill training to learn a lot of the

457
00:16:56,150 --> 00:16:54,800
information they need to know

458
00:16:57,990 --> 00:16:56,160
and then once they've actually been

459
00:16:59,350 --> 00:16:58,000
selected as an astronaut and they're

460
00:17:01,670 --> 00:16:59,360
grouped up with a team they start

461
00:17:03,590 --> 00:17:01,680
working and doing simulations and a lot

462
00:17:05,189 --> 00:17:03,600
of those simulations not only help them

463
00:17:07,110 --> 00:17:05,199
to do their jobs and the experiments

464
00:17:08,949 --> 00:17:07,120
that they're going to perform up on

465
00:17:10,470 --> 00:17:08,959
the space station but they also have to

466
00:17:12,150 --> 00:17:10,480
go through what they would do in an

467
00:17:13,590 --> 00:17:12,160
emergency and that's probably one of the

468
00:17:15,510 --> 00:17:13,600
biggest things that they go through and

469
00:17:17,270 --> 00:17:15,520
they run through them time and time

470
00:17:20,870 --> 00:17:17,280
again i think i read somewhere that it

471
00:17:22,470 --> 00:17:20,880
was way over 300 plus hours that they

472
00:17:24,710 --> 00:17:22,480
actually trained for that kind of stuff

473
00:17:27,110 --> 00:17:24,720
right and not only not only the

474
00:17:28,390 --> 00:17:27,120
astronauts but everybody on the ground

475
00:17:30,789 --> 00:17:28,400
goes through

476
00:17:32,870 --> 00:17:30,799
the type of training for any emergency

477
00:17:34,710 --> 00:17:32,880
case as well every one of these people

478
00:17:36,549 --> 00:17:34,720
that you see in this flight control room

479
00:17:38,390 --> 00:17:36,559
have gone through extensive training in

480
00:17:40,870 --> 00:17:38,400
fact they do training when they're not

481
00:17:43,830 --> 00:17:40,880
in the room for maybe a future flight

482
00:17:46,549 --> 00:17:43,840
and then the work that megan does on

483
00:17:47,990 --> 00:17:46,559
software development and that has to be

484
00:17:50,549 --> 00:17:48,000
thoroughly tested and they do

485
00:17:53,190 --> 00:17:50,559
simulations probably on that just like

486
00:17:56,310 --> 00:17:53,200
the crew trains for a flight you guys do

487
00:17:58,150 --> 00:17:56,320
the same thing right oh yes we our

488
00:17:59,909 --> 00:17:58,160
flight software goes through extensive

489
00:18:02,870 --> 00:17:59,919
training i think it goes through two

490
00:18:05,110 --> 00:18:02,880
years of testing and simulations before

491
00:18:07,270 --> 00:18:05,120
it actually makes it on board the space

492
00:18:09,750 --> 00:18:07,280
station that's a great question and in

493
00:18:11,510 --> 00:18:09,760
fact yesterday the crew members on board

494
00:18:13,590 --> 00:18:11,520
four of them the commander and the three

495
00:18:16,310 --> 00:18:13,600
newest crew members went through a

496
00:18:18,470 --> 00:18:16,320
training exercise not directly emergency

497
00:18:19,830 --> 00:18:18,480
but they did go through procedures that

498
00:18:22,070 --> 00:18:19,840
if there was an emergency where they

499
00:18:24,310 --> 00:18:22,080
would go just like you would in your

500
00:18:26,310 --> 00:18:24,320
school for a fire drill

501
00:18:28,470 --> 00:18:26,320
exactly what procedures you would go

502
00:18:29,909 --> 00:18:28,480
through to make sure that you were safe

503
00:18:32,470 --> 00:18:29,919
in the event of an emergency they do

504
00:18:35,270 --> 00:18:32,480
that on the space station and they do it

505
00:18:37,990 --> 00:18:35,280
quite regularly to stay proficient great

506
00:18:44,470 --> 00:18:40,630
hi my name is dwayne spradlin how long

507
00:18:46,870 --> 00:18:44,480
until artificial gravity is invented

508
00:18:49,430 --> 00:18:46,880
that's a good question

509
00:18:52,070 --> 00:18:49,440
and i'm really not sure of the answer on

510
00:18:53,669 --> 00:18:52,080
that one i think it's still a ways off i

511
00:18:55,350 --> 00:18:53,679
think right now what they're mainly

512
00:18:57,590 --> 00:18:55,360
focusing on is how to have humans

513
00:18:58,870 --> 00:18:57,600
survive in the microgravity

514
00:19:05,110 --> 00:18:58,880
environment

515
00:19:08,630 --> 00:19:06,870
hi my name is jadis what would the car

516
00:19:11,510 --> 00:19:08,640
do if they did not have enough fuel to

517
00:19:13,990 --> 00:19:11,520
return to earth

518
00:19:15,590 --> 00:19:14,000
you know i'm not entirely sure what they

519
00:19:16,470 --> 00:19:15,600
have in their procedures for this one

520
00:19:18,870 --> 00:19:16,480
but

521
00:19:20,470 --> 00:19:18,880
i think in general they try to have a

522
00:19:22,830 --> 00:19:20,480
vehicle on standby that they could

523
00:19:24,950 --> 00:19:22,840
always send up in case of

524
00:19:27,430 --> 00:19:24,960
emergency yeah they're

525
00:19:31,510 --> 00:19:27,440
the the spacecraft that they fly to and

526
00:19:34,230 --> 00:19:31,520
from the space station uh right now

527
00:19:36,870 --> 00:19:34,240
it's very well calculated and they would

528
00:19:38,789 --> 00:19:36,880
know even probably before they got to

529
00:19:41,909 --> 00:19:38,799
the space station if they were not going

530
00:19:45,029 --> 00:19:41,919
to have enough fuel to get home and so

531
00:19:46,630 --> 00:19:45,039
it's very well organized and understood

532
00:19:47,909 --> 00:19:46,640
beforehand

533
00:19:50,950 --> 00:19:47,919
how much fuel they have on the

534
00:19:52,390 --> 00:19:50,960
spacecraft itself the space station has

535
00:19:54,150 --> 00:19:52,400
plenty of fuel the

536
00:19:55,590 --> 00:19:54,160
there are vehicles that come and go from

537
00:19:57,590 --> 00:19:55,600
the station

538
00:20:00,070 --> 00:19:57,600
that actually deliver fuel so they kind

539
00:20:02,310 --> 00:20:00,080
of fill up the tanks if you will on the

540
00:20:04,310 --> 00:20:02,320
station so so that those maneuvers we

541
00:20:06,230 --> 00:20:04,320
talked about earlier you know those can

542
00:20:07,990 --> 00:20:06,240
take place whenever they're necessary

543
00:20:10,470 --> 00:20:08,000
the smaller spacecraft that deliver the

544
00:20:12,390 --> 00:20:10,480
crew to and from the station

545
00:20:14,149 --> 00:20:12,400
you know they always have reserve fuel

546
00:20:16,870 --> 00:20:14,159
that's that's on board and they

547
00:20:18,470 --> 00:20:16,880
calculate it very carefully so they know

548
00:20:20,870 --> 00:20:18,480
exactly how much fuel they have and they

549
00:20:23,270 --> 00:20:20,880
know that they have enough to get home

550
00:20:25,270 --> 00:20:23,280
whether it be in an emergency or rather

551
00:20:27,110 --> 00:20:25,280
or when they're actually regularly

552
00:20:30,310 --> 00:20:27,120
scheduled to come home

553
00:20:34,870 --> 00:20:32,710
what would happen if the iss was knocked

554
00:20:38,789 --> 00:20:34,880
out of orbit

555
00:20:41,350 --> 00:20:38,799
um

556
00:20:43,510 --> 00:20:41,360
that's a good question i don't see it

557
00:20:47,190 --> 00:20:43,520
necessarily getting knocked out of orbit

558
00:20:49,350 --> 00:20:47,200
at least not with astronauts on board

559
00:20:51,270 --> 00:20:49,360
they would use thrusters to help put it

560
00:20:52,549 --> 00:20:51,280
back to where it needs to go

561
00:20:54,950 --> 00:20:52,559
they do

562
00:20:56,950 --> 00:20:54,960
have thrusters again actually on the

563
00:20:58,789 --> 00:20:56,960
space station and on the soyuz vehicles

564
00:21:01,430 --> 00:20:58,799
that are always docked there

565
00:21:03,110 --> 00:21:01,440
and those would all be used to help get

566
00:21:05,510 --> 00:21:03,120
it back to where it needs to be yeah if

567
00:21:07,029 --> 00:21:05,520
it was something yeah i'm not sure your

568
00:21:08,870 --> 00:21:07,039
question but if it's something big

569
00:21:11,350 --> 00:21:08,880
enough that knocks this that actually

570
00:21:13,270 --> 00:21:11,360
hits the station and and moves it it

571
00:21:15,750 --> 00:21:13,280
would be something severe enough that

572
00:21:18,230 --> 00:21:15,760
would probably

573
00:21:21,110 --> 00:21:18,240
cause the loss of the vehicle or require

574
00:21:23,029 --> 00:21:21,120
the crew to leave in an emergency

575
00:21:25,590 --> 00:21:23,039
but if it's something

576
00:21:27,909 --> 00:21:25,600
as simple as we lose command and control

577
00:21:29,510 --> 00:21:27,919
function for a while which we have done

578
00:21:31,750 --> 00:21:29,520
the station might be in what they what

579
00:21:34,149 --> 00:21:31,760
they call like free drift right that

580
00:21:37,190 --> 00:21:34,159
where it just changes direction or

581
00:21:39,430 --> 00:21:37,200
changes its position but the thrusters

582
00:21:41,029 --> 00:21:39,440
or the gyroscopes on board could could

583
00:21:46,710 --> 00:21:41,039
actually maneuver it back like megan

584
00:21:50,870 --> 00:21:48,549
i believe that was our last question for

585
00:21:53,350 --> 00:21:50,880
you today thank you very much oh we're

586
00:21:55,750 --> 00:21:53,360
very happy to have you all come into the

587
00:22:05,830 --> 00:21:55,760
room and join us yes thank you thanks a

588
00:22:09,590 --> 00:22:07,590
all right and kyle and megan thank you

589
00:22:12,470 --> 00:22:09,600
so much for answering the students

590
00:22:14,630 --> 00:22:12,480
questions and alvarado junior high uh

591
00:22:16,950 --> 00:22:14,640
thank you very much you guys did a great

592
00:22:19,669 --> 00:22:16,960
job especially speaking up clearly and

593
00:22:21,350 --> 00:22:19,679
loudly and uh now let's give one final