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America's favorite flock of nerds on The Big Bang Theory have been charming viewers for a decade, and fans have been obsessed with the show as much as the characters are obsessed with Star Trek.

Jim Parsons, Sheldon Cooper himself, addressed real fan theories of the Big Bang backstage at The Late Late Show with James Corden. The hypotheses range from Cyborg Bernadette to Bizarro Barney Stinson, which extends well to a parallel universe.

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Math, science, history.... unraveling the mystery that all started with The Big Bang.