Theresa Marlin, Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, United States, Eliot F Young, Southwest Research Institute, Boulder, CO, United States, Katherine de Kleer, California Institute of Technology, Geological and Planetary Sciences, Pasadena, United States, Imke De Pater, Univ California Berkeley, Berkeley, United States, Martin Cordiner, NASA Goddard Space Flight Center, Greenbelt, United States; Catholic University of America, Washington, United States, Paul Corlies, Spectral Sciences, Inc., Burlington, United States, Richard Cosentino, Space Telescope Science Institute, Baltimore, United States, Nicholas Lombardo, Yale University, New Haven, United States, Juan Manuel Lora, Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States, Conor A Nixon, NASA Goddard Space Flight Center, Planetary Systems Laboratory, Greenbelt, MD, United States, Sebastien Rodriguez, Institut de Physique du Globe de Paris, Paris, France and Alexander E Thelen, California Institute of Technology, Pasadena, United States