Before the Big Bang, how could "nothing" exist

Examine the subject of how the universe came to be and what, if anything, existed before it. The Cosmic Microwave Background is shown as a picture of the early universe in this film, which explores the Big Bang Theory by looking at the quick expansion from an eternally hot, dense state. Even tho there are still unanswered fundamental problems, modern science keeps improving our comprehension of the universe's past. #crisistimebigbanguniverstheorycosmocmicrowavedarkenergyobservation