  GeV beams of light ions and electrons are used for creating a high flux of
real and virtual photons, with which some problems in Nuclear Astrophysics are
studied. GeV 8B beams are used to study the Coulomb dissociation of 8B and thus
the 7Be(p,gamma)8B reaction. This reaction is one of the major source of
uncertainties in estimating the 8B solar neutrino flux and a critical input for
calculating the 8B Solar neutrino flux. The Coulomb dissociation of 8B appears
to provide a viable method for measuring the 7Be(p,gamma)8B reaction rate, with
a weighted average of the RIKEN1, RIKEN2, GSI1 and MSU published results of
S17(0) = 18.9 +/- 1.0 eV-b. This result however does not include a theoretical
error estimated to be +/- 10 %. GeV electron beams on the other hand, are used
to create a high flux of real and virtual photons at TUNL-HIGS and MIT-Bates,
respectively, and we discuss two new proposals to study the 12C(alpha,gamma)16O
reaction with real and virtual photons. The 12C(alpha,gamma)16O reaction is
essential for understanding Type II and Type Ia supernova. It is concluded that
virtual and real photons produced by GeV light ions and electron beams are
useful for studying some problems in Nuclear Astrophysics.
