Xiaochen Mao, Washington University in St Louis, St. Louis, MO, United States, William B McKinnon, Washington Univ, Saint Louis, MO, United States, James Tuttle Keane, California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, CA, United States, John R Spencer, Southwest Research Institute, Boulder, CO, United States, Catherine Olkin, Southwest Research Institute Boulder, Boulder, CO, United States, Harold A Weaver Jr, The Johns Hopkins University, Laurel, MD, United States, S Alan Stern, Southwest Research Institute Boulder, Dept Space Studies, Boulder, CO, United States and The New Horizons Geology and Geophysics Theme Team