Keeping it short and simple,
If light is traveling (at the speed of light of course) in the exact opposite direction to the pull of a black hole, will it not HAVE to slow down?
Light is effected by the gravitational pull of black holes, and usually spirals into them, but if a photon is traveling in -exactly- the opposite direction to the pull of the black hole, then it will have only one way to accelerate: backwards. It seems to me that physicists are always saying light can't slow down in a constant medium...but if light didn't slow down here what would happen? I can't see another possible solution.
Please reply with your thoughts, I have tried talking with person after person about this, but no one seems to care or understand. If I'm wrong I want to be SHOWN why I'm wrong, I'd love that! It's just that no one has ever given me an answer to this and it's driving me nuts!