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Originally Posted by Graybeard Can the Universe have a centre ... A centre would imply that there are other places that are not central .. eventually you would arrive at an edge.
Greg |
Not necessarily - if you think of the universe has having a space-time visualisation as the surface area of a sphere then you would have a model that has no true centre (every point on the surface could equally be noted as the centre), that can expand and contract and, since it has no boundaries, has no edges. Naturally in reality we're talking about much higher levels of dimensionality but the theory should still hold.
Dave