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Clip: Season 1 | 2m Video has closed captioning.
Astronauts Scott Kelly and Jessica Meir discuss the importance of the Twin Study, which will help scientists understand the effects of being in space for a year.
Aired: 11/15/17
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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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