Question

what do u think what have happened before big bang ?​

Answer 1

Explanation:

Some theories suggest that, before the Big Bang, whatever existed was contracting, rather than expanding, as our universe is today. Perhaps what was contracting was an earlier universe, for example. If so, what we perceive as a Big Bang was actually a part of a Big Bounce.

Answer 2

Some theories suggest that, before the Big Bang, whatever existed was contracting, rather than expanding, as our universe is today. Perhaps what was contracting was an earlier universe, for example. If so, what we perceive as a Big Bang was actually a part of a Big Bounce.

Hope it's helpful