By 1970, fourteen years after Los Alamos scientists first proved the existence of the neutrino, they knew something was amiss: an underground neutrino experiment built inside the Homestake Mine, an enormous active gold mine in South Dakota, was detecting way fewer neutrinos coming from the Sun than scientists had predicted, and they didn't know why. From Ghost Particle to Cosmic Messenger
May 14, 2026
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By 1970, fourteen years after Los Alamos scientists first proved the existence of the neutrino, they knew something was amiss: an underground neutrino experiment built inside the Homestake Mine, an enormous active gold mine in South Dakota, was detecting way fewer neutrinos coming from the Sun than scientists had predicted, and they didn't know why. 