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: 8.5
Score: 7.6
Score: 6.0
Score: 0.0
Score: 7.2
Score: 0.0
Score: 8.0
Score: 5.9
