--Ames Research Center
Research Scientist
--Major areas of research:
Robotic exploration of planetary surfaces, History of water on Mars,
Geophysics and tectonics of icy satellites, Tectonics of Venus, Planetary
gamma-ray and x-ray spectroscopy
--Abbreviated list of NASA Research
Co-Investigator, Comet Penetrator/Lander, Comet Rendezvous/Asteroid Flyby Mission
Guest Investigator, Magellan Mission
Member, Imaging Science Team, Cassini Mission
Co-Investigator, Mars '96 Mission
Co-Investigator, MARDI, Mars Polar Lander mission
Gamma-Ray Spectrometer Flight Investigation Team, Mars Odyssey Mission
Principal Investigator, APEX, Mars Surveyor 2001 Lander mission
Principal Investigator, Athena Rover Investigation, Mars Exploration Rover mission
Co-Investigator, HiRISE, Mars Reconnaissance Orbiter mission
Co-Investigator, APXS, Mars Science Laboratory mission
Co-Investigator, SAM analytical instrument suite, Mars Science Laboratory mission
Crewmember, NEEMO 15 and 16, Aquarius habitat, Florida Keys
--Chairmanships
Group chair, NASA Cassini Saturn Orbiter Review Panel
Chairman, MESUR Mission Science Definition Team
US Co-chair, US/Russian Mars Environment Implementation Team
Chairman, NASA Mars Science Working Group
Chairman, NASA Campaign Strategy Working Group for Prebiotic Chemistry in the Outer Solar System
Chairman, NASA Solar System Exploration Subcommittee
Chairman, NASA Space Science Advisory Committee
Chairman, National Research Council Planetary Decadal Survey
Chairman, NASA Advisory Council
