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my point is light is not like a ball that you throw upwards, then it slows down and falls back to the ground. It always travels at the speed of light. Are we suggesting that when a photon leaves a body with sufficient gravity it travels upwards for a bit, and then slows down and falls back to the body? Cause that's what it means when an object is under the escape velocity. Light doesn't travel slower when it exits a body with larger gravity, so how can gravity be responsible for stopping light in its' tracks?