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(May 6) -- If you could travel backward or forward in time, which direction would you go, and what would you do when you got there? It's the stuff of so many books, television shows, movies and daydreams.

From H.G. Wells' "The Time Machine" to the "Back to the Future" trilogy -- not to mention "Bill & Ted's Excellent Adventure," "Star Trek," "Lost" and "Hot Tub Time Machine" -- there's no doubt that the concept of time travel has become a well-established theme in science fiction.

But two of the world's most respected scientific minds now say that time travel could become a part of science reality.
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    Community,   Time travel
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    Science Time Travel
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