BERKELEY, CA — Saul Perlmutter, a member of the Physics Division at the U.S. Department of Energy's Lawrence Berkeley National Laboratory, professor of physics at the University of California at Berkeley, leader of the international Supernova Cosmology Project, and principal investigator of the SuperNova/Acceleration Probe (SNAP) project, has won the Shaw Prize in Astronomy for the discovery that the expansion of the universe is accelerating.