Moon used as giant particle detector

Researchers hunting for the elusive neutrino typically trek to Antarctica, the Mediterranean, and Lake Baikal. But a growing number of projects are looking for the most energetic neutrinos by aiming radio telescopes at the moon.
If the efforts are successful, they might reveal the universe's most powerful particle accelerators or even evidence of exotic new physics.
Neutrinos are fundamental particles that pass easily through matter, only occasionally colliding with atomic nuclei. Until now, the only extraterrestrial neutrinos that have been found were forged in the sun and in one nearby supernova called 1987A.
But astronomers suspect the universe is full of even higher energy neutrinos, produced by cosmic accelerators that whipped charged particles to energies about 100 million times as high as those generated in the most powerful particle accelerators on Earth.