He later became involved with Carl Pennypacker and Saul Perlmutter, who had founded the Supernova Cosmology Project in 1988 at Lawrence Berkeley, which searched the universe for signs of supernovae, which could be used to determine the rate at which the universe was expanding.
He later became involved with Carl Pennypacker. He later became involved with Saul Perlmutter. Carl Pennypacker and Saul Perlmutter had founded the Supernova Cosmology Project in 1988 at Lawrence Berkeley. Lawrence Berkeley searched the universe for signs of supernovae. Supernovae could be used to determine the rate at which the universe was expanding.