The rules of time-travel have been debated by scientists and sci-fi fans alike for years but now a student physicist has been able to "square the numbers" to show how paradox-free time travel is theoretically possible.
The rules of time-travel have been debated by scientists and sci-fi fans alike for years but now a student physicist has been able to "square the numbers" to show how paradox-free time travel is theoretically possible.
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