A Year in Space

Space Twins

Clip: Episode 1 | 2m 11s | Video has closed captioning.

Using data from identical twin astronauts Mark and Scott Kelly, NASA’s twin study is investigating the long-term effects of space travel on the human body. The results will be used to help get humans to Mars.

Aired: 03/02/16

Rating: TV-PG

Problems Playing Video? | Closed Captioning