This talk compares standard model predictions with the results of solar
neutrino experiments. Here `standard model' means the combined standard model
of minimal electroweak theory plus a standard solar model. I emphasize the
importance of recent analyses in which the neutrino fluxes are treated as free
parameters, independent of any constraints from solar models, and the stunning
agreement between the predictions of standard solar models and
helioseismological measurements. In order to interpret solar neutrino
experiments more accurately in terms of fundamental physics and astronomy, we
need improved improved nuclear physics data. I describe the five most important
nuclear physics problems whose solution is required for understanding the
precise implications of solar neutrino experiments.Comment: 20 pages, RevTeX file. To appear in the Proceedings of the 15th
International Conference on Few-Body Problems in Physics, Groningen, The
Netherlands, 22--26 July 1997, ed. J. C. S. Bacelar, A. E. L. Dieperink, and
R. A. Malfliet (Amsterdam: Elsevier Science Publishers). Related material at
http://www.sns.ias.edu/~jn
