One of the problems with space travel is that the chemical fuels required to get around in space.. really limit how far a spacecraft can go. A spacecraft can only carry around so much fuel, and then once that fuel is gone, the ship is basically drifting in space. There are some creative solutions to this challenge, though. If you aren't in a hurry, you can try to propel an object with the momentum of light. Or you can shoot very small atoms at high velocity to create thrust. But you cannot change the laws of physics
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