My first post here so please go easy if this in the wrong place... But I have a question which I think I know the answer too but need verification. Situation: if there were 2 earths of same Mass and Gravity but one is at the centre of the universe (next to creation point-empty) and one was at the outer edge of universe (lots of space matter) time would be the same on both worlds. Premise: Time is determined by the gravity and speed of light constant not the 'location' or how much other matter is closer to it. So my question is : if you were on an earth next to a black hole (lets just say you could survive) would time grind nearly to a halt?