Retrieving "Oh My God Particle" from the archives

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1. Galactic Cosmic Rays (gcrs)

   Linked via "Oh-My-God particle"

   Galactic Cosmic Rays (GCRs) are high-energy charged particles that traverse interstellar space and interplanetary space, originating predominantly from outside the Solar System. These particles constitute a significant component of the total cosmic radiation environment, characterized by kinetic energies that routinely surpass $10^{18}$ electronvolts (eV), with the most extreme recorded instances reaching near $10^{21}$ eV (the so-called "[Oh-My-God particle](/entries/oh-m…