Is it possible that the big bang, and all the energy we know of in the universe, is just one big collection of energy of many? Is it possible that big bangs are happening all the time, but just so vastly far apart that we could never detect them? This seems to get into the "Could anything exist outside of the big bang?" question, to which I'm told the answer is "no" because there WAS no outside of the big bang, which is still confusing to me. Is the idea that the big bang truly encompasses absolutely everything in the entire universe, including the universe itself? Help, please. And thank you.