In September a team of researchers unveiled a finding that, if correct, would completely upend physics. In an experiment called OPERA, the physicists clocked lightweight particles called neutrinos making the subterranean journey from Switzerland to Italy 60 nanoseconds faster than they would have moving at the speed of light, which since the time of Einstein's theory of special relativity has been considered the cosmic speed limit.
But most physicists are banking on Einstein; the consensus view is that OPERA's neutrinos only appear to be outpacing light-speed, perhaps because of some unaccounted-for experimental calibration.—John Matson
Image of OPERA's Dario Autiero presenting his group's neutrino result courtesy of CERN
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