Re: How Fast Do Rogue Planets Move?
One method of getting a rogue planet is to have a system change from a sigular to a close binary. If this were to happen to Sol, Mercury would be slingshotted, Venus would have a seriously perturbed orbit, and Earth would have a slightly disturbed orbit.
Of course, this would necessitate a close encounter with another star at just the right angles and velocities for mutual capture, which isn't exactly likely.