It’s Okay To Be Smart Presents: How To See Time Travel

Get it a train ticket and stare at it very intensely.
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Time is an illusion; lunch time, doubly so. But cosmic rays—AKA, high-energy radiation charged particles from outer space—are real, and if you have a cloud chamber handy, you can test the theory of relativity while viewing these strange particles. It’s the closest we’re ever going to get to watching time travel—short of a Doctor Who marathon, of course.

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