Past, Present, Future: Time Travel with Brian Greene
StarTalk Radio
Is There a Realm Before the Big Bang?
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.
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