Kevin France University of Colorado at Boulder Alexander Brown University of Colorado at Boulder James R.A. Davenport University of Washington Shawn D. Domagal-Goldman NASA Goddard Space Flight Center Douglas K. Duncan University of Colorado at Boulder Juan Fontenla NorthWest Research Associates, Inc. Cynthia Suzanne Froning Southwest Research Institute Suzanne L. Hawley University of Washington Lisa Kaltenegger Cornell University James F. Kasting The Pennsylvania State University Jeffrey L. Linsky University of Colorado at Boulder R. O. Parke Loyd Eureka Scientific Inc. Pablo Mauas Instituto De Astronomia Y Fisica Del Espacio Yamila Miguel Universiteit Leiden Seth Redfield Wesleyan University Aki Roberge NASA Goddard Space Flight Center Sarah Rugheimer University of Edinburgh, Institute for Astronomy Christian Schneider Christian-Albrechts Universitat zu Kiel Antigona Segura National Autonomous University of Mexico Feng Tian Tsinghua University Mariela Vieytes Instituto de Astronomia y Fisica del Espacio Lucianne M. Walkowicz The Adler Planetarium & Astronomy Museum