reply to post by Saint Exupery
Solar flares and cosmic rays. The sun, even when quiet, kicks out a fair amount of nasty energetic particles and high energy photons, which is bad
enough; when it is flaring up there is a lot more gamma and xray, followed by torrents of particles coming at very high speed.
High energy particles and photons coming from deep space are pretty much a constant as well. Generally, without an atmosphere or any form of
protection you are going to be irradiated like a sausage in a breeder
Just about to watch doc. Looking forward to it! Thanks for posting
edit on 6/1/11 by strangequark because: clarity