Can humans survive on Mars? Scientists fear RADIATION threatens NASA Mars missions NASA astronauts who could one day head to Mars will be exposed to incredibly high doses of radiation – a risk that could jeopardise the safety of future Mars missions. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Peter Grünberg, 78, Winner of an ‘iPod Nobel,’ Is DeadScientific breakthrough could help replay memories of murder victims AFTER DEATHScientist Behind Dolly the Sheep, a Key to Parkinson’s Research, Has the Disease HimselfThreatened: A Green-Haired Turtle That Can Breathe Through Its GenitalsScientists find 'SEMI-INFINITE' trove of rare-earth materials in shock discovery in Japan64 Pounds of Trash Killed a Sperm Whale in Spain, Scientists Say