Astrophysicist Neil deGrasse Tyson explains how relativity allows time to pass at different rates, making travel to the future conceivable, while returning to the past remains beyond known physics.
Astrophysicist Neil deGrasse Tyson explains how relativity allows time to pass at different rates, making travel to the future conceivable, while returning to the past remains beyond known physics.
Future travel via time dilation is just speeding up a clock you can’t stop. Show me the past-side equations before I buy the sales pitch, Neil.