Multiverse Theory Explained: Does the Multiverse Really Exist? Truth of Multiple Realities

0:00 What if there's an exact copy of you? 0:35 What is the universe? Everything we can observe 1:00 The observable universe and the Big Bang 1:38 What if the Big Bang was just OUR beginning? 1:56 Multiverse theory: our universe may not be alone 2:25 Where the idea came from: inflation theory (1980) 2:43 Three problems the Big Bang can't explain 3:07 Inflation theory: atom-sized → cosmic in a fraction of a second 3:39 Eternal inflation: inflation doesn't end everywhere at once 4:03 Each new universe gets its own laws of physics 4:29 Dark matter and dark energy as possible multiverse evidence 4:44 Scientific debate: fascinating idea or science fiction? 4:56 Searching for evidence: cosmic microwave background distortions 5:08 Special black holes as multiverse clues 5:20 Parallel universes in philosophy, literature, and pop culture 5:35 Multiverse in science fiction and popular culture 6:05 Will we ever prove the multiverse exists?