Steven W. Squyres, Ph.D.
James A. Weeks Professor of Astronomy
Steven W. Squyres, Ph.D., serves as the Chairman of the NASA Advisory Council. He is the James A. Weeks Professor of Astronomy at Cornell University, Ithaca, New York. He served during the 1990's as a member of the NASA Advisory Council, and also has served as chairman of the former NASA Space Science Advisory Committee.
Dr. Squyres' research focuses on the robotic exploration of planetary surfaces, the history of water on Mars, geophysics and tectonics of icy satellites, tectonics of Venus, and planetary gamma-ray and X-ray spectroscopy. His best known research includes study of the history and distribution of water on Mars and of the possible existence and habitability of a liquid water ocean on Europa.
Dr. Squyres has participated in a number of NASA planetary missions including Voyager, Magellan, and the Near Earth Asteroid Rendezvous. He is currently the scientific principal investigator for the Mars Exploration Rover mission, which includes the Spirit and Opportunity rovers. He also is a co-investigator on the Mars Express mission, the Mars Reconnaissance Orbiter, the Mars Science Laboratory mission, and the Cassini mission to Saturn. In 1981, he earned a Ph.D. in Planetary Science from Cornell University.