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Scientists explain how a 300 TeV photon could reach Earth

A mysterious signal from a powerful gamma-ray burst may reveal how exotic particles and altered physics could let extreme radiation cross the universe The post Scientists explain how a 300 TeV photon…

  • 300 TeV photon observed by LHAASO on 9 October 2022
  • Two speculative mechanisms: axion-like particles and Lorentz invariance violation
  • Observations require multiple distant sources to confirm

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