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:Origins of HOBBITS discovered in PhilippinesHawaii volcano eruption TODAY: Where are Leilani Estates? Evacuation MAPMatter: The Very First Animal Appeared Amid an Explosion of DNAHawaii volcano eruption: Big Island’s Kilauea volcano ERUPTS - latest newsKilauea Volcano in Hawaii Erupts, Spewing Lava Near HomesCANCER WARNING: Mobile phones could be behind rise in brain tumours, says report