Every day millions of neutrinos zip through Earth with hardly a
scratch to them or to Earth. Neutrinos are particles with no
charge that are produced in the sun, stars, and by the cosmic
rays that rain down on Earth's atmosphere. They can travel
immense distances at the speed of light without being stopped by
galaxies, stars, or planets. come in three flavors: electron,
muon, and tau.| Super-K detects the electron and muon neutrinos
that were created at the top of the atmosphere by cosmic rays.
Surprisingly, the muon flavor of neutrinos have a greater chance
of disappearing when going through Earth than do the electron
flavor. The physicists assume that they changed into
undetectable tau neutrinos. Such a change in flavor is called
neutrino oscillation. The very successful "Standard Model"
states that oscillations can occur only if the two neutrinos
have different masses. But, if one flavor has a mass, it is very
likely that all three do. | (0.0K)|| At the Super-K neutrino
detector, the number of neutrinos en