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Extending on this logic, probably Universe is finite (okay, don't jump on me!) because its way too big for us to see what's at the end. I wonder if it has been mathematically proven that the Universe is infinite or its still a concept?
...and if universe is infinite, why do people say that its expanding?  [Out of context; sorry for that!]
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Excellent point! basically we do not know for sure. depends on how far we can see in space and practical calculations on how galaxies are moving away from each other. Vissin also explains it well.
As for infinity, it should exist theoretically and it does not practically. I understand now what you were saying.
and frodo ur confusing urself and us,
. The breakdown of physis laws at singularity is just a theory. and moreover that point in time was only once, so we cannot base much logic for current argument.