Thats a good question and I don’t know the answer.
In fact, nobody knows the answer to that 🙂
What people can do is look at our universe today and calculate back what it looked like a year ago, a million years ago, etc. up to the point of the big bang itself, but then the calculations have different things that could happen even before that.
And people are still trying to find evidence for any of these possiblities.
You are more than welcome to join this search for knowledge 😀
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