Neutrino

About:

A subatomic particle with a mass much smaller than other elementary particles.

Neutrino Oscillation:

Neutrinos can change between types as they travel.

Spin:

Neutrinos have a spin of 1/2 and a net neutral charge.

Interaction:

Neutrinos rarely interact with other matter, & thus called "ghost particles."

Abundance:

They are the most abundant particles with mass in the universe.