Aallegra.320 net.space utzoo!decvax!duke!chico!harpo!mhtsa!allegra!lacy Mon Mar 15 13:13:28 1982 Variation of G with universe mass? I am wondering if Newton's gravitational constant G varies with the total mass of the universe.That is, if two golf balls were the only mass in the universe would the gravitational attraction between them be different from the situation of the same balls in a universe with a uniform distribution of mass?