Subject: Re: Richard Feynman explains why Mars a one way trip
By the way I wholeheartedly support space exploration.

As do I. I think it's fanciful that we might have permanent human colonies outside the earth's magnetosphere any time within the next fifty years, but space exploration in general is certainly a worthwhile pursuit. I expect it will mostly consist of unmanned exploration, other than perhaps a lunar facility similar to Antarctica (ie. someplace that's manned all the time with short-term workers but with no permanent inhabitants who continuously live there).