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hi i'm dr natasha cho flight surgeon at

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johnson space center in houston texas i

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got into this line of work by first

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going to college i decided to major in

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biology and then i did a nasa internship

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in what's called astrobiology at ames

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research center in california that's

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where i learned about space medicine and

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that nasa actually hires doctors so then

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i went to medical school to become a

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doctor

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i specialized in emergency medicine and

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then i did additional training in space

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medicine before coming to nasa and

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getting hired

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are you ready to see the stem behind

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space nasa is gearing up for a journey

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to mars a mission that will take

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astronauts into space for the longest

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duration yet

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astronaut scott kelly and nasa's one

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year mission helped us learn what

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happens to body systems during a long

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duration space flight

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the knowledge gained is critical in

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helping us determine how we will prepare

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for missions that will leave low earth

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orbit nasa and texas instruments have

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teamed up to create activities

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integrating science technology

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engineering and mathematics

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in this activity you'll focus on the

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cardiovascular system and first learn

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how the heart pumps blood as well as the

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direction of blood flow

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once you've learned basic heart function

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you will observe how microgravity could

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affect the heart and how exercise can

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help avoid problems with a

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cardiovascular system

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the reason we study the cardiovascular

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system in space is because it can relate

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to how the cardiovascular system works

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on earth for other patients astronauts

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hearts and their circulations go through

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a lot of changes in space that help us

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understand how we can treat older

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individuals on the ground who may have

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heart conditions and other circulatory

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issues

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so the best piece of advice that i got

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when i was speaking to astronauts is to

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do what you love because if you do what

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you love you're gonna love what you do

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and you're gonna do it better and that's

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when opportunities will really open to