Limits RegistryPUBLIC RECORD
Limits RegistryThe 'Oh-My-God particle,' detected by the Fly's Eye telescope array in Dugway, Utah on October 15, 1991, carried an estimated 320 exa-electron-volts (EeV) of energy — millions of times more than particles reach at the Large Hadron Collider, packed into a single subatomic particle. Its exact source remains unidentified; it remains the highest-energy cosmic ray ever recorded, ahead of the 2021 'Amaterasu particle' (244 EeV).
The question, scope, and sources behind this Registry record.
The 'Oh-My-God particle,' detected by the Fly's Eye telescope array in Dugway, Utah on October 15, 1991, carried an estimated 320 exa-electron-volts (EeV) of energy — millions of times more than particles reach at the Large Hadron Collider, packed into a single subatomic particle. Its exact source remains unidentified; it remains the highest-energy cosmic ray ever recorded, ahead of the 2021 'Amaterasu particle' (244 EeV).
The greatest energy ever measured for a single cosmic ray particle detected reaching Earth.
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Current frontiers derived from accepted Claims.
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The frontier as it changed over time.
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1 accepted Claim, with 1 linked evidence records.
Permanent ID limitsregistry.com/limits/LR-HIGHEST-ENERGY-COSMIC-RAY
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Limits Registry. LR-HIGHEST-ENERGY-COSMIC-RAY. Highest-energy cosmic ray ever detected. 2026.