There may not even be a realm of reality that we could delineate as before the Big Bang. You'd have to pass out of our sort of spacetime structure and enter somebody else's spacetime if you want to go before what happened with the Big bang. The different outcomes were not directly attributable to time travel. We'll make it two minutes on Star Talk, then land up back at home.
What type of time travel is in A Christmas Carol? Neil deGrasse Tyson and comedian Chuck Nice answer fan questions on time travel, paradoxes, and wormholes with theoretical physicist, Brian Greene. Did Ebenezer Scrooge get pulled through a wormhole?
NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/past-present-future-time-travel-with-brian-greene/
Photo Credit: Ajaj1818, CC BY-SA 4.0, via Wikimedia Commons
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