Theoretical Astrophysics. Theoretical Nuclear and Elementary Particle Physics. Nuclear and Particle Astrophysics. General relativity, especially as regards instability in massive objects. Physics of the early universe; gravitational collapse and supernovae, compact objects; nuclear and quark matter; the origin of nuclei, especially the light elements in the Big Bang and the heavy elements in supernovae; the weak interaction and neutrinos. A common theme running through much of Professor Fullers work is the interplay of the weak interaction, nuclei, and gravitation.