High-energy neutrinos ensnared from beyond the solar system

Speedy particles may point to gargantuan black holes or cataclysmic explosions

ENERGETIC ERNIE  IceCube light detectors measured the flash triggered by a neutrino, nicknamed Ernie, on January 3, 2012. With an energy of 1.14 million billion electron volts, Ernie is the highest-energy neutrino ever observed.

Courtesy of the IceCube Collaboration

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