RICHARD KAIL / SCIENCE PHOTO LIBRARY RICHARD KAIL / SCIENCE PHOTO LIBRARY
Neutrino cascade, conceptual image. Computer illustration of neutrinos entering and interacting with the Earth's atmosphere. Neutrinos are electrically neutral elementary particles. When high-energy particles and radiation from space (cosmic rays) impact molecules in the Earth's atmosphere they cause a secondary cascade of subatomic particles including protons, neutrons, light nuclei, neutrinos, pions, and muons.
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