Oh-My-God particle

English

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Proper noun

Oh-My-God particle (plural Oh-My-God particles)

  1. (astronomy, physics) An ultra-high-energy cosmic ray detected in 1991, of uncertain nature, which exceeds the GZK limit; the highest energy particle ever discovered.
    Synonyms: OMG Particle, OMG particle
    • 2023 November 24, Hannah Devlin, “‘What the heck is going on?’ Extremely high-energy particle detected falling to Earth”, in The Guardian‎[1], →ISSN, archived from the original on 8 January 2025:
      Similarly, the Oh-My-God particle had no discernible source. Scientists suggest this could indicate a much larger magnetic deflection than predicted, an unidentified source in the Local Void, or an incomplete understanding of high-energy particle physics.

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