Deep under the Mediterranean, scientists have recorded the highest-energy neutrino ever detected. Now they are working out what this elusive particle could reveal about the universe we live in.
By Jonathan O’Callaghan
Below the waves of the Mediterranean, Europe’s KM3NeT neutrino telescope is on a cosmic hunt. Towering strings of sensors stretch a kilometre down to the seafloor, arranged in a vast 3D grid.
Its mission? To capture ghostly subatomic
