  The aim of these notes is to provide a brief review of the topic of neutrino
astronomy and in particular of neutrinos from core collapse supernovae. They
are addressed to a curious reader, beginning to work in a multidisciplinary
area that involves experimental neutrino physics, astrophysics, nuclear physics
and particle physics phenomenology. After an introduction to the methods and
goals of neutrinos astronomy, we focus on core collapse supernovae, as (one of)
the most promising astrophysical source of neutrinos. The first part is
organized almost as a tale, the last part is a bit more technical. We discuss
the impact of flavor oscillations on the supernova neutrino signal (=the change
of perspective due to recent achievements) and consider one specific example of
signal in detail. This shows that effects of oscillations are important, but
astrophysical uncertainties should be thought as an essential systematics for a
correct interpretation of future experimental data. Three appendices
corroborate the text with further details and some basics on flavor
oscillations; but no attempt of a complete bibliographical survey is done (in
practice, we selected a few references that we believe are useful for a
`modern' introduction to the subject. We suggest the use of public databases
for papers as SPIRES or NASA/ESO or for experiments as SPIRES or PaNAGIC to get
a more complete information).
