Cover of the Dec. 18 issue of Science, depicting Einstein stunned by the resurrection of his discarded cosmological constant. The discovery that universal expansion is accelerating was made by the Berkeley Lab-based Supernova Cosmology Project.)

Above are simulated representations of a recent supernova in the Centaurus A galaxy, prepared by the Supernova Cosmology Project and NERSC's Computer Visualization Laboratory. The image on the left shows how a supernova appears as it brightens. The upper right graph shows how the supernova grows brighter and then fades away; and the bottom right graph shows the supernova's spectrum.