Quote:
Originally Posted by JustAFriend
Easier way for an 'interplanetary highway' was thought up some years ago (help me out guys, getting old...)
You nudge an asteroid into an orbit that takes it from Earth to Mars regularly.
Then hollow out the asteroid into a huge permanently manned base.
Then all you have to do is rendezvous with the asteroid as it passes Earth and then depart when it gets near Mars. Reverse for the return.
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You don't need an asteroid, but that is often called a "cycler." For instance, here:
http://www.popularmechanics.com/scie...26.html?page=1