[Stalky]

K, i have to admit, this question came to me after watching a few too many episodes of stargate. The problem that for a galaxy as interconnected as that one to exist it appears you would have to violate one of the main rules of general relativity that nothing, no message, photon, or alien lifeform, should be able to exceed the speed of light.

Small scale wormholes might exist, but they are of little consequesnce because nothing can pass through them, so no message can be carried faster than light speed, but a large scale traversable wormhole would provide a real problem in that i could fire a lazer beam at you from 200 Ly away, and warn you about it the next day giving you 199y and 364 days to get out of the way of something you should never know was coming.

Is there any physics impedement, besides the limit which the speed of light places upon the transferance of a message, to events like that occurring?

Does this circumvention of the speed of light, and thus time itself, possibly exist? Why can or can't it?