China's Deep-Sea Hunt for Elusive Particles

China is building a massive neutrino detector with 55,000 sensors suspended 0.6 miles beneath the ocean's surface to hunt for high-energy neutrinos that may originate from black holes, supernovas, pulsars, or other events. The detector will cover about 7 cubic miles and will be the largest underwater neutrino detector. Scientists hope to determine whether gamma rays and high-energy neutrinos come from the same intergalactic sources and figure out the origin of cosmic rays.