Closed Captioning
apply | reset x
font
size
T
T
T
T
color

Astronaut Scott Kelly blasts off for twin study

Play Video - 0:39
March 27th, 2015

Astronaut Scott Kelly blasts off for twin study

Scott Kelly will head to space to discover the long-term effects of weightlessness on the body. Scientists will compare changes in the bodies of Kelly and his twin brother Mark (who will remain on Earth) after the mission.

More video

TRENDING

LIFESTYLE