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New design could forgo exotic ingredient
The laws of physics seem to allow time travel, but no one has had much hope of building an actual time machine because it would take such exotic conditions and materials.
Now, physicist Amos Ori of the Technion Israel Institute of Technology in Haifa has come up with a potentially more practical time machine design. Unlike most previous proposals, this one requires only normal matter and the vacuum known to exist in space, says Ori.
One type of time travel occurs routinely here and now: our inexorable one-way drift into the future. Einstein's special theory of relativity revealed the possibility of accelerated travel into the future...