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Beyond A Year in Space
The Twin Study
While Scott Kelly spent a year on the International Space Station, his twin brother Mark spent a year on earth. By analyzing the differences between the two men, NASA researchers hope to gain insight into the effects of spaceflight on the human body.
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54:10
Beyond A Year in Space follows Scott Kelly's return to Earth and NASA's Twin Study.
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55:37
A Year in Space gives viewers a window into astronaut Scott Kelly’s unprecedented mission.