Or
Enter your email address and we'll send you a link to reset your password.
To view this video please enable JavaScript, and consider upgrading to the latest web browser
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.
Our movie and video library can only be streamed or downloaded by members only