Astrophysics has been an active research field at the North Carolina Supercomputing Center since its inception in 1989. Numerical simulations have been used to study a vast array of astrophysical phenomena, including star formation, jets and winds from stars, supernovae, interstellar shockwaves, accretion onto black holes, quasars, and extragalactic jets. With the addition of an IBM RS6000/SP, recent work has focused on high resolution hydrodynamic simulations in full three dimensions. We will show new results from three projects focusing on the death of massive stars: investigating the role of hydrodynamic convection in driving a supernova explosion, modeling the morphology of young supernova remnants, and measuring the transport of matter through an accretion disk in a binary star system.