Dr. Anthony Mezzacappa is a Distinguished R&D Staff Member and Task Leader for Astrophysics Theory at the Oak Ridge National Laboratory. He has been on staff at the Lab since 1994. He held postdoctoral appointments at the University of Pennsylvania and the University of North Carolina at Chapel Hill. He completed his undergraduate work at M.I.T. and his graduate work at the Center for Relativity at the University of Texas at Austin, under the direction of Center Director Richard Matzner. He has worked in the areas of cosmology, numerical relativity, and computational astrophysics, and specializes in core collapse supernova theory. In 1998, Dr. Mezzacappa received a DoE Energy Research Young Scientist Award and, in 1999, a Presidential Early Career Award for Scientists and Engineers (PECASE), both for his supernova work. He is the PI of the TeraScale Supernova Initiative, a national collaboration involving 40 researchers from 11 institutions, funded by the DoE Office of Science Scientific Discovery through Advanced Computing Program.