Photo report KM3NeT event 12 February 2025

14 February 2025

On 12 February, a live stream from three locations (Amsterdam, Rome and Paris) announced the detection of a cosmic neutrino with a record energy of about 220 PeV, measured in the depths of the Mediterranean Sea.

This event is the most energetic neutrino ever observed and provides the first evidence that neutrinos of such high energies are produced in the Universe. After long and meticulous work to analyse and interpret the experimental data, on Wednesday 12th February, an article was published in Nature.

Read the press release

Page with all the background materials about this detection (photos, videos, infographics, etc.)

Below the photos of the live-stream event at Nikhef. Photos: Marco Kraan/Nikhef

The new Vertex at Nikhef was at full capacity.

Nikhef director Jorgen D’Hondt opened the event at Nikhef.

Nikhef researcher and vice programme leader of the Nikhef KM3NeT group shed light on the result.

Nikhef researcher Aart Heijboer explains the result with an artist impression video of the detection.

The result was celebrated from Amsterdam, Rome and Paris.

One of the KM3NeT-Digital Optical Modules looks on during the presentations.

Q&A with the KM3NeT group. From left to right Aart Heijboer, Nikhef KM3NeT programme leader Dorothea Samtleben, Nikhef researcher Maarten de Jong and Nikhef vice programme leader Paul de Jong.

The Nikhef KM3NeT group.

Time to celebrate the special detection.