Gravity actually acts kind of... weird... in an infinitely large uniform universe. You end up with gravity acting like a time-dependent position-independent sca

Gravity actually acts kind of... weird... in an infinitely large uniform universe. You end up with gravity acting like a time-dependent position-independent scaling factor on position. Leonard Susskind goes over the derivation (for Newtonian gravity) in a Cosmology lecture available on youtube [1]. 1: https://youtu.be/ERjkSbdn6-4?t=53m50s https://youtu.be/ERjkSbdn6-4?t=53m50s