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Gravity May Protect The Universe From Time Travel Paradoxes, But There's a Catch
New physics research and historical thought experiments highlight ongoing debates about the limits and paradoxes of time travel.
Time Travel
3 trends tracked about this subject — the full history, oldest to newest below.
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Physicist claims time travel can only take us to the future
A physicist's mathematical proof suggests certain spacetimes fundamentally forbid backward time travel, limiting temporal movement to the future only.
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🔮 fades
Einstein’s relativity allows time travel into the future, and we have already measured it: atomic clocks flown around Earth on aeroplanes came home showing a different time from clocks left on the ground
Scientific coverage reveals that time travel into the future is permitted by relativity and already measured.