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hello i'm hank so you're spending an

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entire year in space which is cool but

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you're also very much offering up your

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living body for scientific

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experimentation here and you are going

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to have significant health impacts

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because of this research what makes you

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well all uh all astronauts that fly in

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space are uh human subjects so it's this

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is just not about me

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it's uh

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you know something we all do uh

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certainly i'll be up here a little bit

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longer um but the reason i'm willing to

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do this i think it's important research

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that we do and is going to be critical

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someday to us uh you know going further

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out into space and hopefully tomorrow

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hi i'm louis cole i travel the world and

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make videos for my youtube channel fun

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for louis

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and in my adventures i find there's a

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lot of obstacles i come across

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what's been the biggest obstacle of the

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mission that you're on and how did you

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well

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this is my uh

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fourth time in space my second long

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duration flight so

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i kind of eased into this uh pretty

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easily it kind of felt like i had

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really never left it's really amazing

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how your body remembers the environment

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i think though the biggest obstacle or

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the biggest challenge will be the the

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duration of of this flight you know just

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being here for so long never being able

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to leave never being able to leave your

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place at work so

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you know so far it's been a pretty

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seamless transition but i you know i

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expect as i'm here longer it'll be uh

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hi astronaut kelly i'm emily grassley

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from the brain scoop standing in front

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of our meteorite collection here at the

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field museum in chicago

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my question for you i know you're

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studying your immune system's responses

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and functionality while living in space

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for a year so considering how much of a

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person's healthy immune system has

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evolved for millions of years along with

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life forms on earth do you have any

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predictions for how humans could

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maintain a well-balanced microbiome

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while living in space without things

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like plants animals or microbes gleaned

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from life forms on earth

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you know that's a good question i i do

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know that one of the studies i'm

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participating in is this microbiome

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research

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um

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you know we do get some you know fresh

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fruits and vegetables up here in our

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diet is uh you know not exactly the same

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it is on earth but

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i really hadn't considered that you know

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what the

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impact uh

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to living here

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on the the microbiome of our our bodies

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is um but i guess you know there is some

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and certainly that's why we're doing the

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research so hopefully uh you know this

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experiment will will find those answers

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i i don't have a personal hypothesis but

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i'm sure

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you know the experimenters do and if you

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want more information i'm sure your nasa

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contact

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hey mr kelly kyle hill here from because

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science on the nerdist channel in los

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angeles i'm wondering surveying the

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popular culture landscape and what you

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know of our future space missions what

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do you think will be the thing that

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inspires the next generation of

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astronauts to be the first generation of

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well you know i hope uh

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kids get inspiration from

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uh the space program like they do other

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places

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uh you know hopefully what we're doing

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here inspires

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kids to study

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uh stem education science technology

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engineering math subjects because those

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are critical uh to our future not only

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our space program but to our economy as

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a whole so you know i hope they get some

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inspiration from what we're doing here i

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hope they also get inspiration from you

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know their friends and family and uh you

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know people that they uh

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learn from their teachers

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um

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you know whatever role models they may

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have because that

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is our future and you know kids are our

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hi scott i'm henry reich from the

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youtube channel's minute physics and

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minute earth i've always been fascinated

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by the instability of rotation around

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the intermediate axis of an object for

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example if you rotate around the axis of

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large angular inertia it's a stable

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rotation if you rotate around the

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the very smallest axis of inertia it is

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also a stable rotation but if you try to

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rotate around the intermediate axis of

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rotation

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it's unstable you see these things flip

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back and forth back and forth and back

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and forth you can see this is obviously

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a challenge here on earth because you

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have to throw things through the air and

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it's a mess and i was wondering if you

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might be able to do a demo for us on the

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iss thanks for your time and i hope you

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yeah i guess what you're talking about

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is how this leather man tool is wrote

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it'll rotate along one axis and then

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so i hope that was a good demonstration

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i'll do it again here real quick as we

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go to the next

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hello scott my name is michael stevens

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from the youtube channel vsauce

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i'm asking this question from toronto

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ontario and my question is about cosmic

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ray visuals i've heard that up in space

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stray cosmic rays can cause you to see

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flashes of light has that ever happened

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you know the first time i saw those was

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on my hubble space telescope mission in

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1999 the hubble flies a lot higher than

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the space station so we can see a lot

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more of those cosmic rays

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i would see you know on order of maybe

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like 50 an hour

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uh but the space station is is lower and

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a little bit more protected from those

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um

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and you see them much less frequently

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although i'll see you know maybe a few

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each night uh

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in my previous experience with hubble

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they were very much more distinct and

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would kind of look like they were just

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white flashes of light like a firework

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that was kind of radial towards the

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center of my eye now they seem a little

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bit different

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and i don't know if that's because of

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the altitude we're at but a little bit

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more not as uh

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well-defined not uh

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and and kind of more random in in you

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know how they uh

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uh

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streak across my field of view i guess i

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should say but um

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you know i was thinking about it last

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night when i saw one

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thinking about hey not only is this

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thing going across my visual field but

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hey scottis destin from smarter everyday

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enjoyed working with you hope to do it

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again drop me an email if you're

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interested quick question what kind of

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watch do you wear i know you have two

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but i don't know why what features are

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important on an astronaut's watch stay

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hey dustin uh good to hear from you um

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so normally the watch i wear up here is

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because uh one reason the omega is good

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is because it has a very loud alarm it

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has a light that is very bright it's one

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that was designed for space the light

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you could almost use as a flashlight and

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if it's really dark

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like in the evenings

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today i'm wearing a breitling that my

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brother gave me because i was just

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talking to him on the today show

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so

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but i normally don't wear this watch

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during the working day and the other one

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is a sleep study watch that misha and i

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have to wear the whole time we're up

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here which measures acceleration in

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other words whether you're moving around

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or not and light so it can tell you know

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pretty accurately when we're asleep and

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hey this is hank again so imagine when

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the thrust of that last rocket stops and

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you become weightless for the first time

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of the journey it feels initially like

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you're falling because that's what

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you're doing you're really falling

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around the earth and missing it for a

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year it's that moment when the airplane

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drops in the turbulence or you're at the

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top of the roller coaster and you feel

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that feeling in your stomach that's what

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i imagine it feels like when does that

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feeling stop or does it stop or do you

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well on on launch it it stops pretty

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quickly you know

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i think some people don't even ever

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experience it i don't really feel that

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way for long on launch after the engines

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uh cut off and you first experience uh

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microgravity

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you know however you know i can go in my

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crew quarters at night when it's dark

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and i'm getting ready to go to sleep and

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close my eyes

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and

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you know convince myself

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i do have a feeling of falling but it

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takes a little bit of effort but we are

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we're you know that's why everything

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floats here is because

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no it's not because we're so far away

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from earth and the gravity is low it's

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because we're all in free fall around

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the earth at the same time

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so

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i can

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convince myself

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that i feel that although i don't feel

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it right this second as i'm talking to

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hi i'm louis cole i travel the world

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filming videos for my youtube channel

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and doing what you're doing staying up

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on the international space station is

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the biggest adventure i could imagine

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and i'm sure it has been for you but if

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you could travel to anywhere else and

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space any solar system or planet

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you know people normally ask you know

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if you could travel to any other place

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in our solar system and then i generally

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say mars

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but the way you pose the question i

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think

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if i could go anywhere it would probably

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be to

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a planet that astronomers and scientists

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have just determined is most like earth

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and uh you know to see what's really

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there you know if there are living

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creatures

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or you know just how that planet is

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evolved and how similar it really is to