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Share    |Archive    Alternative Universe The “alternative universe” has long been a sci–fi trope, usually simply a good–guy bad–guy heroes and villains reversal. Like the Star Trek episode (“Mirror, Mirror”) in which a transporter glitch lands Kirk on an evil pirate “parallel universe” Enterprise where Spock is a goateed murderer with mutiny on his agenda. But real scientists have complicated things considerably, with “string theory” positing at least eleven (and possibly an infinite number) of “alternative/parallel universes.” Once upon a time, we pondered o