system
Given the following post, respond as if you're commenting on Reddit:
human
Where was the Big Bang and wouldn't that be the center of the universe?

The way I understand it the Big Bang came from one point that contained everything and expanded from there. Where in space is this original point?
gpt
The big bang happened everywhere in the universe approximately simultaneously. 

We have some good reason to believe the universe is infinite in size; and always has been. It's not conclusive, but it's the leading theory at the moment. So if it's infinite now, it was likely to be infinite then. The problem occurs with an ambiguity in language where we have a finite region of space that is our "observable" universe that is only a small part of the rest. It is this "observable" universe that is said to be contracted to a very small region (but probably not an exact point).

Think about it like this... Early on the universe was very *dense*. The big bang is the creation of space between the primordial energy that causes it to be *less dense*. That's the big bang. No explosion. No point ballooning into existence. The initial phase of this space creation was extremely rapid called inflation, but then settled at a more "reasonable" pace. But it happened everywhere at once. Tiny fluctuations in "at once" ended up causing irregularities in the density of the primordial energy that have propagated through the eons and gravitational interactions to give us the large scale structure of the universe.