Not So Fast: Second Experiment Refutes Superluminal Particles

Not So Fast: Second Experiment Refutes Superluminal Particles

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Anyone who bet against Einstein better get out their wallet. That’s because those supposedly faster-than-light particles that shook up the world of physics last September are now looking a lot slower.

A second experiment deep in an Italian mountain timed these subatomic particles, called neutrinos, traveling at precisely the speed of light and no faster, a team from the experiment, called ICARUS, announced. The new results pile on to revelations last month that a loose cable may have compromised the original experiment, called OPERA.

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