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Jim Erickson

Individual Image James K. Erickson of NASA's Jet Propulsion Laboratory is project manager for NASA's Mars Exploration Rovers. He was project manager for NASA's Galileo mission to Jupiter for three years prior to joining the rover project as mission manager in 2001. During 30 years at JPL, he has also worked on the Viking missions to Mars, the Voyager missions to outer planets and the Mars Observer mission. He earned a bachelor's degree in applied physics from Harvey Mudd College, Claremont, Calif., and a master's in business administration and project management from West Coast University, Los Angeles. He lives in Glendale, Calif.

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Dr. Steve Squyres

Individual Image Steven W. Squyres is a professor of astronomy at Cornell University and the principal investigator for the science payload on NASA's Mars Exploration Rovers.  His research focuses on the large solid bodies of the solar system: the terrestrial planets and the satellites of the gas-giant planets. Squyres has participated in a number of planetary spaceflight missions. From 1978 to 1981 he was an associate of the Voyager imaging science team, participating in analysis of imaging data from the encounters with Jupiter and Saturn. He was a radar investigator on NASA's Magellan mission to Venus, a member of the Mars Observer gamma-ray spectrometer flight investigation team, and a co-investigator on the Russian Mars `96 mission. He is a member of the imaging science team on NASA's Cassini mission to Saturn and was a member of the gamma-ray/X-ray spectrometer team on NASA's Near Earth Asteroid Rendezvous mission.  He received his Ph.D. from Cornell in 1981.

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Dr. Ray Arvidson

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Dr. Raymond E. Arvidson is James S. McDonnell Distinguished University Professor and chair of the Department of Earth and Planetary Sciences at Washington University, St. Louis. He is deputy principal investigator for the science payload on NASA's Mars Exploration Rovers. In addition, Arvidson serves as an interdisciplinary scientist on NASA's Mars Global Surveyor, head of NASA's Planetary Data System Geosciences Node and a director of NASA's Regional Planetary Image Center. He has more than 100 publications dealing with remote sensing of Earth, Mars and Venus. He was science team leader for the imaging system on NASA's Viking Landers from 1977 to 1982. Arvidson attended high school in Williamstown, N.J., then earned a bachelor's degree in geology from Temple University, Philadelphia, and a doctorate in geological sciences from Brown University, Providence, R.I.

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