Steve Squyres is best known for his key role as Principal Investigator for the science payload on the Mars Exploration Rovers Spirit and Opportunity. He received his Ph.D. from Cornell in 1981 and spent five years as a postdoctoral associate and research scientist at NASA’s Ames Research Center (ARC) before returning to Cornell as a faculty member. His main areas of scientific interest have been on Mars and the moons of the outer planets.