Watch 'The Martian' astronauts struggle with isolation training
 

One of the greatest challenges for any manned Mars mission isn't surviving the planet itself, but remaining mentally sound on the way there -- you don't want to freak out during a months-long space voyage. And it looks like the producers behind the...

http://www.engadget.com/2015/08/05/t...cid%3Drss_semi