Neutrino physics and astrophysics Original Research Article

Neutrinos have been and are abundantly produced in the Universe and by accelerators or nuclear reactors. They play a key-role both in particle physics and in astrophysics. We focus in this review on the present quest for neutrino masses, mainly via the search for neutrino oscillations in the study of solar neutrinos, atmospheric neutrinos, and of neutrinos from accelerators or reactors.