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Time Travel 'Impossible,' Say Scientists

Albert Einstein

First Posted: 07/26/11 12:34 PM ET Updated: 09/25/11 06:12 AM ET

Discovery News:

Hong Kong physicists say they have proved that a single photon obeys Einstein's theory that nothing can travel faster than the speed of light -- demonstrating that outside science fiction, time travel is impossible.

Read the whole story: Discovery News

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