A neutrino is an electrically neutral elementary particle with a tiny but nonzero mass that interacts only through gravity and the weak nuclear force. Trillions pass through your body every second without leaving a trace, which is why detectors are buried deep underground and filled with thousands of tons of material. They are produced by fusion in the Sun, by supernovae, and by cosmic rays striking the atmosphere. Precisely because they barely interact, they escape from places light cannot, carrying information out of stellar cores and distant cataclysms.
Astrophysics · Particle Physics · Neutrinos
Right now, trillions of them are streaming through your body every second, and almost none will touch a single atom. Catching a few has let us see ins...
Cosmology · Dark Matter · Particle Physics
Dark matter and neutrinos are the universe's most elusive residents, each almost incapable of feeling anything. A growing body of cosmological evidenc...