Imagine you will die tomorrow morning in a horrific car crash. Somewhere far, far away, there's an exact version of you that got in the same car, drove the same route, and collided with the same commuter. But this other version of you survives to drive another day. It may sound like science fiction, but it's looking more and more scientific likely. Somewhere out there, beyond the cosmic horizon, inside a black hole, or as close as an atom's length away, there could be a parallel universe. If this is the case, how could we ever know? And would we ever be able to pay this universe a visit?
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Ready to Watch Through the Wormhole, Season 2, Episode 10?