Ronald Greeley,72, passed away on October 27, 2011. He is survived by his wife of 51 years, Cynthia (Cindy) Moody Greeley, a son, three grandchildren and two brothers. He is preceded in death by a daughter. Ron received his undergraduate and graduate degrees in geology from Mississippi State University, and his doctorate from the University of Missouri at Rolla. Ron was a planetary geologist and Regents' Professor at ASU. He has been involved in lunar and planetary missions since 1967 when he worked at NASA’s Ames Research Center in preparation for the Apollo missions to the Moon. His research in planetary geology has contributed significantly to our understanding of planetary bodies within our solar system. Ron began teaching at ASU in 1977 with a joint professorship in the Department of Geology and the Center for Meteorite Studies. He served as Department Chair and later as Interim Director during the establishment of the School of Earth and Space Exploration at ASU. He was a pioneer in the planetary geology field, served as the director of the NASA-ASU Regional Planetary Image Facility and principal investigator of the Planetary Aeolian Laboratory at NASA-Ames Research Center. He served on and chaired many NASA and National Academy of Science panels and he was involved in nearly every major space probe mission flown in the solar system since the Apollo Moon landings. He was an Alumni Fellow of Mississippi State University, an Overseas Fellow, Churchill College, Cambridge University, England and a Research Fellow of the University of London Observatory, London, England.