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I know that strong gravitational fields, curve spacetime, hence slowing down light according to the uncurved spacetime. Wouldn't it be possible to curve space-time in the opposite direction, so that light travelling in this region will travel faster according to an observer in an uncurved space-time frame. This could mean that a space-ship travelling in this curved region could travel faster than light according to an observer in the uncurved region, but be travelling at less than c in it's curved space reference frame. Does this mean that faster than light travel is possible without breaking the law which says that nothing can travel faster than the speed of light. |