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Conservation of momentum gets in your way: you need to "throw" something out of the back of the satellite to get some momentum in the forward direction.

Though you may read on solar sails though. http://en.wikipedia.org/wiki/Solar_sail

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Thanks for the link. I read a little about solar sails in some of the other stuff I saw. This is a bit more comprehensive on the topic. I would imagine, though, that converting it is theoretically possible, since thrust is just the expenditure of energy, which the sun provides. I just didn't know if there was some technology that would allow for it.

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