cosmic ray(redirected from Anomalous cosmic ray)
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A very rapidly moving particle of extraterrestrial origin, especially one that collides with the earth's atmosphere. Cosmic rays are mainly protons and alpha particles but sometimes are other light atomic nuclei and high-energy electrons.
a radiation of high penetrating power originating in outer space and consisting partly of high-energy atomic nuclei.
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|Noun||1.||cosmic ray - highly penetrating ionizing radiation of extraterrestrial origin; consisting chiefly of protons and alpha particles; collision with atmospheric particles results in rays and particles of many kinds|
ionizing radiation - high-energy radiation capable of producing ionization in substances through which it passes
cosmic radiation - radiation coming from outside the solar system