Dr Daniel Mathurin, Les richesses du sous-sol d’Haïti : mythe ou réalité...

Astronaut Scott Parazynski live now!

Scott Parazynski - Live Q&A

Hi, I'm Astronaut Scott Parazynski. I flew five Space Shuttle missions and conducted seven spacewalks during my career. I'm also a physician and space physiologist, so I can tell you a bit about how the body changes in space - and what my buddies Scott Kelly and Mikhail Korniyenko might be experiencing on their return! Ask me anything!Twitter: @AstroDocScott

Posted by Science Channel on Tuesday, March 1, 2016