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Sciences > Physics Quantum physics: Is time travel theoretically feasible?

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When asking if time travel is theoretically feasible, one must ask both whether it is conceptually possible, and whether it is attainable.

Before it can be said that time travel is theoretically possible, one must first choose a theory to base the prediction on. In modern physics, there are a number of discrepancies between the behavior of matter at the subatomic level and at an astrophysical level. Because of these discrepancies, varying theories to explain observable phenomena have emerged. Theories about space and time on the subatomic scale can not be extrapolated to explain relativi...

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