Neutrinos are tiny, nearly massless particles that are fundamental to the universe. They are produced in various processes, such as nuclear reactions in the sun and during supernova explosions. Despite their abundance, neutrinos interact very weakly with matter, making them difficult to detect. This elusive nature has earned them the nickname 'ghost particles'. There are three types of neutrinos: electron neutrinos, muon neutrinos, and tau neutrinos, each associated with their respective charged leptons. Neutrinos play a crucial role in understanding the universe, including phenomena like supernovae and nuclear fusion in stars.