Steven Levin, NASA Jet Propulsion Laboratory, Pasadena, CA, United States, Zhimeng Zhang, Jet Propulsion Laboratory, California Institute of Technology, Department of Geological and Planetary Sciences, Pasadena, United States, Scott J Bolton, Southwest Research Institute, San Antonio, United States, Shannon T. Brown, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, United States, Anton Ermakov, University of California, Berkeley, Space Sciences Laboratory, Berkeley, United States, Jianqing Feng, Planetary Science Institute, Tucson, United States, Kevin P Hand, Jet Propulsion Laboratory, Pasadena, United States, Sidharth Misra, NASA Jet Propulsion Laboratory, Pasadena, United States, Matthew A Siegler, University of Hawaii at Manoa, Honolulu, United States, David J Stevenson, California Institute of Technology, Pasadena, United States, William B McKinnon, Washington University in Saint Louis, Saint Louis, United States and Ryu Akiba, University of California Santa Cruz, Department of Earth and Planetary Sciences, Santa Cruz, United States