writes "Last week, Slashdotters read about a NASA proposal for in-space 'gas' stations located at strategic spots along a route — a potential boon to spaceflight. The system would be set up ahead of time, with depots drifting idly through the blackness while waiting for a rocket to dock. All the fuel and the propellant depots would be launched before a human mission left for the asteroids or for Mars. FoxNews.com spoke with NASA about the proposal, which the space agency says "could create a small space economy in propellants and refueling."
Space policy expert James Muncy agrees. “We will need the technologies eventually anyway,” he said. “We can’t go to Mars without them.”"Link to Original Source