Record-Breaking Neutrino Detected by Deep-Sea Telescope

The KM3NeT telescope in the Mediterranean has observed the most energetic neutrino ever recorded, providing new insights into extreme cosmic phenomena.

The neutrino, detected in February 2023, carried an unprecedented energy of 220 peta-electronvolts (PeV), far surpassing previous records.
The discovery was made by the Kilometer Cubic Neutrino Telescope (KM3NeT), located more than 1.5 miles beneath the Mediterranean Sea.
Scientists spent two years analyzing and verifying the data before announcing the finding in the journal *Nature* on February 12, 2025.
This detection opens a new chapter in neutrino astronomy, offering a glimpse into ultra-high-energy phenomena such as cosmic accelerators or interactions involving the Big Bang's remnants.
The KM3NeT telescope, still under construction, demonstrated its potential despite being only 10% complete at the time of the detection.