“NASA’s focus now is on sending humans beyond low-Earth orbit to Mars… We are trying to develop the technologies to get there, it is actually a huge technological challenge. There are a couple of really big issues. For one thing – Radiation. Once you get outside the Earth’s magnetic field we are going to be exposing the astronauts to not just radiation coming from the Sun, but also to cosmic radiation. That's a higher dose than we think humans right now should really get.” Dr Ellen Stofan, Chief Scientist, NASA and principal advisor to NASA Administrator
BBC Newsnight interview Nov 13, 2014
“Radiation surely must be the showstopper preventing mankind’s exploration of
the Universe.” Professor Clive Dyer, MA (Cantab.), PhD (Lond.), DIC., June 1997
Clive Dyer has worked in space and radiation research for more than 40 years,
authoring more than 200 publications in the field.