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Mars Rovers Survive the Dust, Follow the Water - Bios of the Presenters
12.11.07
 
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+ Mars Rovers main page
+ Panelists Multimedia page

Steven SquyresSteven Squyres - Goldwin Smith Professor of Planetary Sciences, Cornell University

Steven Squyres is the Goldwin Smith Professor of Planetary Sciences 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 Jovian 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 the 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. Squyres leads an international science team on the development and operation of the Athena science-instrument suite of NASA's Mars Exploration Rover mission. He is a member of the imaging science team on the 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.


image of John CallasJohn Callas - Project Manager of NASA's Mars Exploration Rover project

John Callas, of NASA's Jet Propulsion Laboratory, Pasadena, Calif., has been project manager of NASA's Mars Exploration Rover project since March 2006. Previously, as science manager and then deputy project manager, he had helped lead the rover project since 2000.

Callas grew up near Boston, Mass. He received his bachelor's degree in engineering from Tufts University, Medford, Mass., in 1981 and his masters and Ph.D. in physics from Brown University, Providence, R.I., in 1983 and 1987, respectively. He joined JPL to work on advanced spacecraft propulsion, which included such futuristic concepts as electric, nuclear and antimatter propulsion. In 1989 he began work supporting the exploration of Mars with the Mars Observer mission and has since worked on seven Mars missions.

In addition to his Mars work, Callas is involved in the development of instrumentation for astrophysics and planetary science, and teaches mathematics at Pasadena City College as an adjunct faculty member.