Starts With A Bang #11: Was The Big Bang The Beginning Of The Universe?

Our Universe has been expanding and evolving since the hot, dense, expanding state known as the Big Bang first came to be. But there was a "day without yesterday," where the Big Bang occurred at a moment in time! Was that the birth of space and time itself? Or was there a pre-existing state that came before and gave rise to the Big Bang? Come find out the evidence that's led us to our greatest conclusions about the very beginning of where everything came from!