To bring a human mission to the Red Planet from fiction to fact, our Human Research Program has organized hazards astronauts will encounter on a continual basis into five classifications. Take a look a Hazard #1 – Space Radiation: https://nasa.tumblr.com/post/176697621464/space-radiation-hazard-of-stealth | NASA - National Aeronautics and Space Administration

241K views · 2.3K shares | Scientists, for the first time, have...