The universe is estimated to contain around 10^22 to 10^24 neutrino oscillations.
This description provides an overview of the estimated number of neutrino oscillations in the universe. Neutrinos are subatomic particles that are believed to be the most abundant particles in the universe. They oscillate between three different flavors, and the exact number of these oscillations is difficult
A neutrino is an elementary particle that interacts via the weak interaction and gravity. The neutrino is so named because it is electrically neutral and because its rest mass is so small (-ino) that it was long thought to be zero. The rest mass of the neutrino is much smaller than that of the other known elementary particles . The weak force has a very short range, the gravitational interaction is extremely weak due to the very small mass of the neutrino, and neutrinos do not participate in the electromagnetic interaction or the strong interaction. Consequently, neutrinos typically pass through normal matter unimpeded and with no detectable effect.