A Year in Space

The Twin Study

Clip: Season 1 | 2m 54s Video has closed captioning.

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.

Aired: 11/15/17

Rating: NR

Problems Playing Video? | Closed Captioning

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Meet the Crew Members of Expedition 46

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Meet the Crew Members of Expedition 46

Want to know more about Expedition 46 and its crew members from Beyond A Year in Space? Visit the official website now for exclusive details on the mission, its objectives, and its members.

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