The horizon of a black hole is the boundary where space itself is moving into the black hole at the speed of light in our frame of reference. So any object at rest in space crosses the horizon at the speed of light in our rest frame, yet is still at rest in its own rest frame. So there is no infinity for mass entering a black hole. Compared to the speed of light the mass is essential at rest, yet is absorbed by the black hole. The key to understanding is that space is being absorbed at the same rate as the mass. Can someone tell me what happens to all that space inside the black hole? The answer has already been posted on this forum.