Astrophysicists from Los Alamos National Laboratory, New Mexico, have created the first 3-D computer simulations of the spectacular explosion that marks the death of a massive star. Presented to the American Astronomical Society meeting in Albuquerque, N.M., today, the research by Michael Warren and Chris Fryer eliminates some of the doubts about earlier 2-D modeling and paves the way for rapid advances on other, more exotic questions about supernovae.