  Selected topics in neutrino astrophysics are reviewed. These include the
production of low energy neutrino flux from cores of collapsing stars and the
expected high energy neutrino flux from some other astrophysical sites such as
the galactic plane as well as the center of some distant galaxies. The expected
changes in these neutrino fluxes because of neutrino oscillations during their
propagation to us are described. Observational signatures for these neutrino
fluxes with and without neutrino oscillations are discussed.
