- #1

Johninch

- 131

- 1

So far I have understood that, since the universe is everything, it cannot have a center nor a boundary. But it does have an expansion and that’s when my problems start.

I would like to concentrate on a couple of questions, in order to make some progress:

- if we know the age of the universe and we know its rate of expansion, why is there so much discussion about its total size?

- if the size of the universe is finite, how can the universe be isotropic?

- assuming that the universe is flat and finite, how can it not have a boundary?

I am not talking about the observable universe, I am talking about the total universe. Further, I am assuming that BBT refers to the total universe.

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