The conversation between human and AI assistant.
How could the universe appear out of nothing and what was before the big bang?
Yes, please. What are some current theories about what could have caused the Big Bang?
There are several theories, but one of the most prominent is the inflationary model, which suggests that the universe underwent a period of exponential expansion shortly after the Big Bang. Another idea is that our universe is just one of many in a multiverse, and the Big Bang was simply the result of a collision between two universes.