Particles break light-speed limit Feature Summary

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Particles break light-speed limit
You may have heard the shocking news that an experiment at an Italian laboratory found the speed of a neutrino beam to be slightly greater than the speed of light. This directly violates special relativity, which predicts that no particle can move faster than the speed of light (please note that the "speed of light" referred to here is the speed of light in a vacuum). To learn more about this experimental result, see Particles break light-speed limit.

Update: It turns out that the neutrinos observed in this experiment were not going faster than light after all. As you can read in this short Science Magazine article, the error in the measurement was due to a loose cable connection.

(This feature was updated on September 21, 2013.)
November 1, 2011 - November 15, 2011