OK... So I was sitting there minding my own business when my alter ego popped out of no where and started asking me all these weird questions... One in particular was interesting enough, and I couldn't even imagine what would be the result. What if we mounted every planet, star, asteroid, and every last bit of matter with thrusters strong enough to move them. Then we simultaneously start them in the same direction (+ve X axis?), where would we end at? For the sake of discussion, let's say that the thrusters will last indefinitely.