Two enormous telescopes are currently being constructed deep beneath the Mediterranean Sea, off the coasts of France and Italy, with the ambitious goal of detecting one of the universe’s most elusive particles: the neutrino.
Neutrinos are sometimes called “ghost particles.” They have almost no mass, carry no electric charge, and rarely interact with anything at all. Trillions of them pass through your body every second without leaving a trace. Catching even one requires a detector on an extraordinary scale — which is exactly what researchers in the KM3NeT project are creating.
