'Fantastic' particle could be most energetic neutrino ever detected
Briefly

An ultra-high-energy neutrino, potentially the most energetic ever detected, was found by a deep-sea observatory under construction in the Mediterranean Sea. These neutrinos are believed to signal major cosmic occurrences like black hole growth spurts.
The discovery of this neutrino has been described as a 'fantastic event' by physicist Francis Halzen, showcasing the Astroparticle Research with Cosmics in the Abyss (ARCA) observatory's capabilities. The particle's unique properties raise curiosity about its origin in the sky, prompting anticipation for further research findings.
Read at Nature
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