  Supernovae (SN) and supernova remnants (SNR) have key roles in galaxies, but
their physical descriptions is still incomplete. Thus, it is of interest to
study neutrino radiation to understand SN and SNR better. We will discuss: (1)
The ~10 MeV thermal neutrinos that arise from core collapse SN, that were
observed for SN1987A, and can be seen with several existing or planned
experiments. (2) The 10-100 TeV neutrinos expected from galactic SNR (in
particular from RX J1713.7-3946) targets of future underwater neutrino
telescopes.
