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Physicists may be close to creating the theoretical "time crystals".
Cutting edge physics research gives us another remarkable idea that sounds like something out of a science fiction novel. In 2012, Nobel-Prize winning Frank Wilczek and a team of theoretical physicists at MIT came up with an idea that hypothetical structures exist that would appear to move without using energy. He called them "time crystals". While most physicists since then have dismissed the idea as "impossible", a new paper shows how these time crystals could actually exist, possibly changing our understanding of fundamental principles of nature.