NewsParticle PhysicsScientists are building underwater neutrino telescopes in the MediterraneanThe devices will catch high-energy neutrinos that could reveal secrets of the cosmos Onboard a ship in the Mediterranean Sea, workers prepare launching equipment for the installation of the underwater neutrino telescope KM3NeT.Simone BiagiBy Emily ConoverDecember 23, 2024 at 9:00 amDeploying a telescope in space is one thing. Making two of them deep under the sea is a task in a league of its own.On a ship bobbing in the Mediterranean Sea, physicists not typically known for their sea legs brave weeklong voyages and rough waters, working around the clock to deploy the telescopes detectors.The telescopes are designed to detect not light, but neutrinos. These subatomic particles are spewed at high energies from mysterious, unidentified realms of space. But such high-energy neutrinos are so rare, and so stealthy, that the detectors that study them must be enormous. So scientists are outfitting a cubic kilometer of the Mediterranean with light-collecting devices designed to snag them.