Physics and Astronomy Colloquium
                  Tuesday, April 3, 2001
        4:10 pm, Room 118 Physics-Astronomy Building
            Refreshments at 3:45pm in Room 224 PA


              RECENT PROGRESS AND PROSPECTS IN
     SOLAR, ATMOSPHERIC, AND SUPERNOVA NEUTRINO PHYSICS

                        A.B. Balantekin

                University of Wisconsin-Madison


Recent experimental and theoretical developments in solar and
atmospheric neutrino physics are reviewed. The complementary aspects
of the data from the solar neutrino experiments and helioseismological
observations are discussed. The possibility of doing innovative solar
(as opposed to neutrino) physics with the solar neutrino data are
explored. Core-collapse supernovae are excellent laboratories to study
the consequences of neutrino mass and mixings. In this talk 
active-sterile neutrino conversion in the late time post-core-bounce 
supernova environment is examined. By including the effect of feedback
on the Mikheyev-Smirnov-Wolfenstein conversion potential, a large range
of neutrino mixing parameters which produce a favorable environment for
the r-process nucleosynthesis are obtained. The importance of the
complementary laboratory experiments in nuclear astrophysics will be 
emphasized.