PARTICLE HYSICS 101
Stick up your thumb. Do you feel anything particular? Probably not much. Still, some hundred billion neutrinos pass through your thumb every second. Day in, day out. The ghost-like particles are literally everywhere – they even pass right through planets and stars, as if the Universe is transparent to them.
With zero electrical charge, a negligibly small mass and no susceptibility to the strong nuclear force, neutrinos are the most
