Window to the Future

Time Travel: Is the Future Already Written?


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Time is the ultimate mystery. In Episode 21 of Window to the Future, we explore the science of time travel. From Einstein's Relativity and the "Slow Motion" aging of astronauts to the mind-bending Grandfather Paradox and the Block Universe Theory. Is it possible to change the past, or is everything we do already set in stone?

 

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Window to the FutureBy Thomas Rackers