Saul Perlmutter University of California - Berkeley Megan Donahue Michigan State University Richard S. Ellis University College London Andrew S. Fruchter Space Telescope Science Institute Gerson Goldhaber Lawrence Berkeley National Laboratory Donald E. Groom University of California - Berkeley Alex G. Kim Lawrence Berkeley National Laboratory Richard G. McMahon University of Cambridge Isobel Nook European Southern Observatory - Germany Peter E. Nugent Lawrence Berkeley National Laboratory Reynald Pain Laboratoire de Physique Nucleaire des Hautes Energies Nino Panagia Space Telescope Science Institute