Physicists Tame Time Travel by Forbidding You to Kill Your Grandfather | Wired Science | Wired.com
Physicists Tame Time Travel by Forbidding You to Kill Your Grandfather Novelists and screenwriters know that time travel can be accomplished in all sorts of ways: A supercharged DeLorean, Hermione’s small watch and, most recently, a spacetime-bending hot tub have allowed fictional heroes to jump between past and future. But physicists know that time travel is more than just a compelling plot devic
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