Follow astronaut Scott Kelly's 12-month mission on the International Space Station, from launch to landing, as NASA charts the effects of long-duration spaceflight by comparing him to his identical twin on Earth, astronaut Mark Kelly.
Scott Kelly
Mark Kelly
Mikhail Kornienko
Gennady Padalka
Amiko Kauderer
Score: 6.7
Score: 6.0
Score: 6.5
Score: 7.7
Score: 0.0
Score: 4.4
Score: 6.8
Score: 0.0
