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For over a decade, floating cranes have been lowering a strange cargo some 3000 metres under the Mediterranean Sea. The objects look otherworldly: large, shiny spheres crammed with electronics. They are, in fact, detectors for a machine called , designed to search for one of the most mysterious fundamental particles.
The machine is still several years from completion, so got quite a shock when, in 2023, he spotted a dramatic signal in its preliminary data. It was a neutrino, as expected, but one unlike anything ever seen before. “When I first tried looking at this event, my…
