The international collaboration that operates the KM3NeT experiment, a powerful telescope submerged in the depths of the Mediterranean, today

Although still under construction, the sea-floor KM3NeT detector spotted a neutrino 20 times more powerful than any previously detected.

Europe is building a huge observatory for neutrinos in the Mediterranean. Although it is not yet finished, it has already set an energy record.

Neutrinos are very mysterious particles,” says Damien Dornic, one of the co-authors of a new paper published February 12 in Nature that describes the detection of the decay products of an extremely high energy neutrino by the Kilometer Cubed Neutrino Telescope (KM3NeT),

An extraordinary event consistent with a neutrino with an estimated energy of about 220 PeV (220 x 1015 electron volts or 220 million billion electron volts), was detected on February 13, 2023, by the ARCA detector of the kilometer cubic neutrino telescope (KM3NeT) in the deep sea.