Comment Re:Confused by claims (Score 3, Interesting) 49
Getting to the moon, or mars, in general only requires a single push. Without drag there is nothing to slow down the spacecraft afterwards and you don't need to keep pushing. So you can push once against the magnetic field of the earth if you are pointed in the right direction, and also get to your destination in a reasonable amount of time. The actual questions are: 1. can you push hard enough for accelerating to a reasonable velocity within a reasonable time? 2. What about correction burns/pushes? I suppose you will still need conventional thrusters for course corrections.