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:Yellowstone volcano: Scientist's 'MONTH of devastation' prediction REVEALEDThe Perfect Valentine? A Math Formula.Megalodon shocker: Huge killer shark may have been wiped out by great whitesOpportunity rover: What will happen to Opportunity after rover declared DEADNASA unveil GROUNDBREAKING space telescope able to see ‘FIRST moments of the universe’NASA Mars Rover DEAD: Heartbreaking moment Opportunity sent back its last ever Mars image