[SunkenCiv]

He’s right insofar as long-duration spaceflight (which includes something as mundane as months of exposure aboard the ISS) will mean longer exposure to higher levels of radiation than are found on Earth, and more need to take cover during solar flares. But the only people going to Mars will be aboard private spacecraft like Elon Musk’s superheavy — assuming they can work out the ass-first landings.

http://science.nasa.gov/science-news/science-at-nasa/2005/07oct_afraid/

http://space.stackexchange.com/questions/1034/how-are-the-astronauts-in-the-iss-protected-from-solar-flares

[cripplecreek]

He has no interest in becoming a government employee again but He would make a great advisor for NASA. He’s all for better faster propulsion and habitability and solid decisive steps forward