Personally I believe that looking to Mars on the exploration side is a bit...ahead of ourselves. We must first find a way to cheaply send craft into orbit. If they were serious about this, the first major project would be a space elevator (no joke) recent advances carbon-nanotube-composite ribbons it is very possible to build in the next 10-15 years. This would allow cheap voyage into orbit without all messing with rockets (whenever you strap yourself to a rocket, trouble can follow)
This would help immensly with several things. Trips for satalite repair will be cheaper and safer. Satalites can be put into orbit cheaply, and safer human transport vehicles can be made..(less fuel needed)
That would be a stepping stone for more and better exploration and as a nice side affect, cheaper.
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A damn dirty hippie without the dirty part....
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