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doctor by day astronaut by night dr

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lindgren joins me now been on the space

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station for nearly five months came back

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in december

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you've helped folks here on earth every

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day right as being a doctor but how are

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you helping folks on earth from space

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absolutely well i mean that was uh the

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reason that we go to the international

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space station the reason that we're

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spending five months six months a year

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on the space station is to conduct

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science and research um that is helping

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us extend our presence in the solar

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system

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hopefully onward to mars but also to

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benefit

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life back here on earth

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any experiments in particular that you

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recall performing that that are really

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part of that well um as you mentioned uh

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my background is as a physician and so

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the life sciences research was of

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particular interest to me and so we have

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an ultrasound machine up there uh that

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we looked at the eyes at our hearts and

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our blood vessels

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we we took blood to look at how

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radiation affects dna

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and we do x-rays before after

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our flight to understand how space

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flight is affecting our bones

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all of these things reveal things about

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uh living in space but also basic

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mechanisms that occur back on earth so

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bone loss

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cardiovascular deconditioning muscle

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weakening how the immune system changes

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and becomes maybe overactive or

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suppressed all those things that we see

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in space have direct implications for

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medical care back here on earth so you

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finish those when you were there but

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it'll be a while before research takes

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time so it'll be a while before we know

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the results from what absolutely you did

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but you also

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got almost immediate results you grew

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some lettuce and got to eat that right

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that's right so that was one of my

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favorite experiments um the the science

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was called veggie but our crew got to

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grow lettuce and then ultimately became

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the first us crew to get to grow to eat

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a crop that we had grown in space i had

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the great fortune of being the one to

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take care of the lettuce on a daily

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basis so this opportunity to grow a

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green living plant

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in an otherwise kind of sterile looking

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space station i think you know it's kind

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of like gardening that there's a benefit

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for for to taking care of this living

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growing thing on a day to day basis and

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then ultimately you know to get to to

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eat the lettuce demonstrated that we can

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grow a crop and eat it and i think that

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that has some far-reaching implications

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for how we might provide food supply to

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astronauts that are traveling on these

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long missions like the one that we

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expect for for mars tastes like lettuce

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it tasted just like lettuce

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that's what we want right

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so tell us about the payload operations

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integration center and how you guys work

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together i mean really to perform all of

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these experiences absolutely well the

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the payload operations integration

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center here at huntsville is integral uh

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to the work that we do on the space

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station as i said the science and

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research that we do on a daily basis

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that's the reason that we're in space

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right now the folks that are a part of

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that team that larger science team are

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based here at the marshall space flight

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center and so they are the ones that

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help process the science they work with

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the personal principal investigators

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they make sure that the procedures are

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good to go and and then they help us

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with troubleshooting and so there are

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days when

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i would talk with huntsville more than i

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would talk with with houston and and

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that's

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science and research on the space

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station on a daily basis and so

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it was a privilege for me to be a part

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of the huntsville team you're part of

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the family now yeah uh let's also talk

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about some visiting cargo ships while

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you were there i mean that that was a

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big deal you get fresh supplies then

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absolutely so we had four cargo vehicles

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visit the space station while i was up

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there and that was actually at the end

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of a string of mishaps that we would

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have so those cargo vehicles um were

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more important than they even usually

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are

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we had the htv the japanese or

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japanese exploration agency's cargo

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vehicle

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we had the

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orbital atk cygnus vehicle bringing up

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supplies and that arrived really just a

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day before our crew returned back to the

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earth so you can get the benefit from

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that well i got to capture the vehicle

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with a robotic arm which was absolutely

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amazing experience

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and then we really encouraged the ground

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folks to help us get the vehicle um

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attached to the space station

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uh and to to get the door the hatch open

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so that we could dive in and at least

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because we all had care packages on

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there and we at least wanted to see

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those before we left back to the earth

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but you left it a good time because

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everyone else had to unload it right

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that's right yeah so we got to enjoy all

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the the fun of docking the vehicle

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capturing and docking the vehicle and

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then

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else had to do the work but that's all

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right

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that's okay that's like you were here

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today to talk to a bunch of students

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they're probably future rocket

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scientists building rockets how do you

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inspire

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these young people to do what you've

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done

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well i'm inspired by them i mean the

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opportunity to talk with 800 budding

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rocket scientists was an amazing

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experience for me because i got to look

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out on that crowd and really see the

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future of our space program

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these are the folks that are going to be

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building the rockets that take us to to

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mars and beyond

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there are people in this audience that

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may well be the individual that takes

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that first step on mars and so for me it

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was inspiring to be here

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i just wanted to share my experience to

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let them know that they can make their

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dreams come true

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and to encourage them to really chase

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after those dreams lastly a dream of

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mine would be to be out in space on a

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spacewalk like you were did you just

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stand up and go check me out i mean what

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you were busy we were so busy during our

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spacewalks and absolutely

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amazing experience and one that i will

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just

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forever appreciate

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but it's incredibly hard work and i

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think you know we trained for hundreds

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of hours in our neutral buoyancy

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laboratory

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back in houston

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to to do those uh very difficult and

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dangerous activities

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so i'm grateful that we had the

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opportunity um and it was amazing to be

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able to do it safely successfully and

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then to get back inside want to go back

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i would love to all right we'll see