Comment Re:Why go to another gravity well? (Score 1) 206
I"m not suggesting that we stay Earthbound. I'm suggesting that we don't land on another planet. The asteroids will have most, if not all of the available resources on planets with the added benefit of not sitting at the bottom of a gravity well. Getting out of and returning to the gravity well is the most costly and most dangerous part of any space mission. If we can get out to the asteroid belt then travel to and from nearby asteroids will be cheap if we use ion drives or VASMIR engines. Additionally sending raw materials to anywhere in the solar system would be cheap with the great giant Jupiter sitting nearby to give us gravity assists. The only problems left are health related. We'll need radiation shielding which would be available either by digging into an asteroid or layering materials on the exterior of stations. Then comes the issue of needing a downward force to prevent atrophy. We can spin up an asteroid or a space station to solve that problem.