Neutrino physics is the study of neutrinos, which are tiny, nearly massless particles that rarely interact with matter. They are produced in various processes, such as nuclear reactions in the sun and during supernova explosions. Neutrinos come in three types, or "flavors": electron, muon, and tau, and they can change from one flavor to another in a phenomenon known as neutrino oscillation. Researchers use large detectors, often located underground, to capture and study neutrinos. Understanding neutrinos helps scientists learn more about fundamental forces in the universe, including the weak nuclear force, and can provide insights into the origins of the universe and the nature of dark matter.