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The astronauts take in the history of spaceflight at the Kennedy Space Center.
0:34
The ISS is a floating science lab moving at 17,500 miles per hour, 250 miles above Earth.
2:00
Astronauts Scott Kelly and Jessica Meir discuss the importance of the Twin Study.
0:33
For astronauts, blast off can be an out-of-control experience.
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The margin of error when docking at the ISS is mere inches & they’re moving at 17,500 mph.
1:47
NASA astronaut Scott Kelly misses more than people as he orbits the Earth for a year.
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Tensions between Russia and the United States remain high — except in space.
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We dream of traveling across the solar system. But what compels us to reach for the stars?
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As they orbit the Earth, astronauts have a unique perspective on the wealth and poverty.
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Twin astronauts Scott and Mark Kelly are ideal subjects for studying the effects of space.
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Scott Kelly stays connected to people on Earth with Twitter and Instagram. #YearinSpace
