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In reply to the discussion: Dennis Tito To Announce Private Human Mars Mission [View all]Hugin
(33,135 posts)Launch multiple supply caches to rendezvous with in-route, at and on Mars. That might work.
Werner Von Braun was a big advocate of a staged approach to a moon landing. However, it was vetoed by DC as taking too long. It was the height of the Space Race, for cryin' out loud!
One of the biggest problems facing an extended trip anywhere in space is the radiation exposure experienced by the crew. It's an unfortunate side-effect of where the Earth is positioned in the Solar System. Once the travelers get to some distance (I personally have no idea what that distance is.) from the center of the Solar System, then the Radiation concerns become secondary to supply issues. Having un-peopled supply ships makes the logistics limited only by your bank account.
SEND A CHIMP1!!!11! Heh, sorry. I couldn't keep my alien typing hand completely under control there.
Anyway, I really don't see any huge obstacles to a flyby mission.