|MadSci Network: Physics|
If the universe is lumpy (see question ID#: 877218533.Ph), is there a possibility that portions of it (say groups of galaxies) will “little crunch” while other portions expand forever? If this were to happen frequently enough could it result in multiple smaller universes since the singularities formed by the little crunches will have attracted all the matter within its event horizon leaving nothing between it and the retreating, unaffected matter of other galaxies? My imagination tells me that a universe with big holes of non-universe (except for a singularity at the hole’s center) in it or with whole sections of the universe separated from the main body of the universe by areas of non-universe is possible but only if there are little crunches. This additionally assumes that the non-universe between the singularity and the closest matter it doesn’t affect is really non-universe since there is nothing there.
Re: Effect of a lumpy universe
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