The muon neutrino (??) is the second of the three neutrinos. It, along with the muon, forms the second generation of leptons, hence its name muon neutrino. It was first hypothesized by in the early 1940s by several people, and was discovered in 1962 by Leon Lederman, Melvin Schwartz and Jack Steinberger. The discovery was rewarded with the 1988 Nobel Prize in Physics.