This clip is from the Joe Rogan Experience podcast #938 with Lawrence Krauss (https://youtu.be/bDhHK8nk_V0), also available for download via iTunes & Stitcher (http://bit.ly/2mTC3yM).
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So a “new universe” could be born as a Big Bang in a “pregnant” domain within “our universe” (or any universe) at any moment…🤔
If, as part of the birthing process, the space immediately surrounding this new Big Bang reflexively expands faster than the speed of light, then “we” will never see it, and perhaps never be able to interact with it. Hence it becomes a new universe of unknown physics, unknown reality.
Thus, from “our” universal perspective, this moment would not look like a new universe formed, but instead it would look like a new black hole (white hole) formed.
Still can't believe Joe hasn't interviewed Dr. Manjir Samanta Laughton. Author of punk science amazing veiw on the universe, black holes and time travel. Has Joe ever interveiwed a female Dr 😅
https://youtu.be/a4xJ-M4eVQc?si=8cpI7bLQLRCE5kJK
so if Space is infinitely expanding, at faster than light speeds, that means, going back in time, that Space itself exploded from a non-existing point?
Wrong. No multiverse. Check out Roger Penrose