File - In this March 30, 2010 file picture the globe of the European Organization for Nuclear Research, CERN, is illuminated outside Geneva, Switzerland. (AP Photo/Anja Niedringhaus)
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Scientists have used a laser to tickle atoms of antimatter and make them shine, a key step toward answering one of the great riddles of the universe.Theory predicts that the Big Bang produced equal amounts of matter and antimatter. It took researchers at the European Organization for Nuclear Research, or CERN, decades to figure out how to create an antimatter version of the most basic atom – hydrogen – and trap it for long enough to perform tests.It turns out that when it's stimulated with a laser, antihydrogen appears to produce light on the same ultraviolet frequency as its nemesis in the world of matter, hydrogen.Successfully discovering a difference between matter and antimatter would be worthy of a Nobel Prize, Drexlin said.
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