Could the Big Bang Allow for an Infinite Universe?

AI Thread Summary
The discussion centers on the concept of the universe's size in relation to the Big Bang theory. It argues that while the universe is expanding, it has always been finite at any given moment since the Big Bang, which occurred at t=0. The assertion is made that an infinite universe cannot exist within the framework of the Big Bang model, as it contradicts the finite size at each point in time. However, some participants suggest that an infinite universe could theoretically exist in a static model, separate from the Big Bang. Ultimately, the debate highlights the complexities of cosmological models and their implications for the nature of the universe.
pivoxa15
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I think I have read that the universe is or could be infinite. But that is not possible because we know that the Universe started from a Big Bang. And its size has been expanding ever since. At each point in the past through to the present, the Universe measures a finite size with 0 unit of size at t=0. Therefore the universe has always been and is to the present moment finite.

The universe might expand forever but it does not matter because at each specific time, the universe will always be of finite size hence to speak of an infinite universe is nonsense in the Big Bang model.

An infinite universe can only exist in a static, infinite universe where the universe has 'always been infinite'.
 
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