A question about supposed "faster than light" movements. I'm having a real problem understanding when people talk about the universe's expanding faster than the speed of light. Isn't that impossible? Also, I have heard that a black hole's gravitational pull works at a speed faster than that of light. Is this really true? If so, why doesn't someone arrive at the center of the black hole, before he/she arrives at the EH? Any help would be greatly appreciated.