No going back: physicist’s proof claims time travel can only take us to the future
· euronews.com · popularity 12/100 · 0 similar stories today · Future Technology, Innovation & Design (Discovery & Research)
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Summary
A physicist has distilled time travel into three lines of proof that shows if spacetime can be sliced into layers of light, every traveller must cross them in the same direction, so no journey can ever loop backwards.
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