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Retest of neutrino speed suggests Einstein was right, after all (+video)

An attempt to replicate experiments last year in which neutrinos were measured moving faster than light has clocked the ethereal particles traveling within the cosmic speed limit, suggesting that Einstein's special theory of relativity still holds up. 

Neutrinos are the vampires of physics.
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Six months after physicists shocked the world by announcing they'd found particles seemingly traveling faster than light, the growing scientific consensus seems to be that the results were flawed.

Researchers at the ICARUS project in Italy have recreated an independent version of the original Switzerland-based experiment, called OPERA, and found that their particles traveled at a respectable, sub-light speed.

Though the results don't automatically disprove OPERA's findings, they add to most scientists' sense that the shocking finding was an anomaly.

"The evidence is beginning to point towards the OPERA result being an artifact of the measurement," Sergio Bertolucci, research director at the CERN physics laboratory that houses OPERA, said in a statement. [10 Implications of Faster-Than-Light Neutrinos]

In September, baffled physicists from the OPERA collaboration announced that they'd sent beams of particles called neutrinos from CERN, in Geneva, to a detector buried underground 454 miles (730 kilometers) away in Gran Sasso, Italy, and found that they arrived 60 billionths of a second sooner than light would have.


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