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        Part of Genius by Stephen Hawking
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        Can We Time Travel? Ch. 5: Time Travel on Earth | Genius by Stephen Hawking

        In this clip from Genius by Stephen Hawking, discover if time travel is possible on Earth with an experiment using atomic clocks. Using two incredibly accurate synchronised cesium atomic clocks, three volunteers are aiming to discover whether they can experience warped spacetime. One clock remains near the earth's mass, while the other is taken to high altitude where the earth's gravitational pull is less. After a period of 24 hrs the clocks are brought back together to see if the differing strengths of gravity have been enough to experience a warp in spacetime and effectively travel in time.

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