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The experts in cosmology suggest that the big bang theory is the best model we have at the moment. It is backed up by observations such as the redshift in the light displayed by stars that are moving away from us.
So if the big bang originated from a singular point then surely there must still be a point that could be referenced as the centre of the universe and an outer frontier boundary.
What is the universe expanding into? Maybe it is just an infinite empty space that lies beyond the boundaries of our universe.
Personally, the idea of infinity messes with my head. It is just too hard to fathom; but what else can it be?
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