The Nobel Prize in Physics 1995

The Royal Swedish Academy of Sciences has awarded the 1995 Nobel Prize in Physics for pioneering experimental contributions to lepton physics

Martin L. Perl, Stanford University, Stanford, CA, USA, receives the Nobel Prize for the discovery of the tau lepton.	Frederick Reines, University of California, Irvine, CA, USA, receives the Nobel Prize for the detection of the neutrino.

a lepton that was present in the Big Bang and which has been re-created in particle accelerators

another lepton present in the Big Bang is created in the sun and in supernovas, as well as in nuclear reactors and accelerators