WILSON, Sharon1, WARNER, Nicholas2, MUELLER, Jason3, GRANT, John1, GOLOMBEK, Matthew P.4 and WEITZ, Catherine5, (1)Center for Earth and Planetary Studies, National Air and Space Museum, Smithsonian Institution, Independence Ave at 6th St. SW, Washington, DC 20560, (2)Geological Sciences, SUNY Geneseo, 1 College Circle, Geneseo, NY 14454, (3)Geological Sciences, SUNY Geneseo, Geneseo, NY 14454, (4)Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, (5)Planetary Science Institute, 1700 E Fort Lowell, Suite 106, Tucson, AZ 85719