Dr. Steven Squyres

Dr. Steven Squyres
Name	Steven W. Squyres
Birth date	1956
Birth place	Pittsburgh, Pennsylvania
Nationality	American
Fields	Planetary science, geology, astronomy
Workplaces	Cornell University, NASA, Jet Propulsion Laboratory
Alma mater	Brown University, Cornell University
Known for	Principal Investigator of the Mars Exploration Rover mission, planetary geology research
Awards	NASA Exceptional Scientific Achievement Medal, Guggenheim Fellowship

Dr. Steven Squyres

Dr. Steven Squyres is an American planetary scientist and professor known for leadership of robotic exploration of Mars and contributions to planetary geology. He has held faculty and administrative positions at Cornell University and served as Principal Investigator for the Mars Exploration Rover mission that landed the rovers Spirit and Opportunity. His work bridges field geology, remote sensing, and mission operations involving institutions such as NASA, Jet Propulsion Laboratory, and multiple international partners.

Early life and education

Born in Pittsburgh, Pennsylvania, Squyres completed undergraduate studies at Brown University where he majored in geology and astronomy, participating in research linked to Brown University Geological Department and observational projects associated with Mount Wilson Observatory. He pursued graduate studies at Cornell University, earning a Ph.D. in planetary science with dissertation work connected to lunar and meteoritic studies and collaborations with researchers at Smithsonian Institution and NASA Ames Research Center. During this period he engaged with fieldwork in analog environments including expeditions similar to those organized by United States Geological Survey teams and comparative studies involving the Apollo sample collection.

Academic career and Cornell roles

Squyres joined the faculty of Cornell University as a professor in the Department of Astronomy and the Department of Geological Sciences, where he directed research groups interfacing with laboratories at Cornell Laboratory for Accelerator-Based Sciences and Education and cooperative projects with Caltech and Massachusetts Institute of Technology. He served in leadership roles including department chair and senior administrative appointments that required coordination with institutions such as the National Science Foundation and the Guggenheim Foundation. His teaching and mentorship produced graduate students who later joined organizations like NASA Jet Propulsion Laboratory, European Space Agency, and academic departments at University of Arizona and University of California, Berkeley.

Planetary science research and contributions

Squyres’ research focuses on planetary surface processes, alteration of rocks by water, and the stratigraphy of extraterrestrial terrains, drawing on analog studies from regions like the Atacama Desert, Antarctica, and the Haleakalā volcanic province. He has contributed to understanding of aqueous alteration in meteorites examined at collections such as the American Museum of Natural History and has collaborated on spectral analyses using instruments developed with teams at Lockheed Martin and Malin Space Science Systems. His work intersects with missions like Galileo (spacecraft), Cassini–Huygens, and the Mars Reconnaissance Orbiter through comparative studies of surface morphology, sedimentology, and phyllosilicate detection. He has co-authored papers with scientists affiliated with University of Oxford, Caltech, Jet Propulsion Laboratory, and NASA Goddard Space Flight Center.

Mars Exploration Rover program

As Principal Investigator for the Mars Exploration Rover program, Squyres led science teams and coordinated engineering and operations across NASA, Jet Propulsion Laboratory, Cornell University, and industrial partners such as Honeybee Robotics and Ball Aerospace. He guided selection of landing sites informed by datasets from Mars Global Surveyor, Mars Odyssey, and Mars Reconnaissance Orbiter, championing exploration of regions with indicators of past liquid water. Under his leadership, the rovers Spirit and Opportunity returned mineralogical and morphological evidence interpreted in collaboration with scientists from Smithsonian Institution, California Institute of Technology, and Brown University that reshaped interpretations of Martian palaeoenvironments and influenced subsequent missions like Mars Science Laboratory and Perseverance (rover).

Publications and awards

Squyres has authored and co-authored numerous peer-reviewed articles in journals such as Science (journal), Nature (journal), and Journal of Geophysical Research. He is author of popular and technical works and has been recognized with awards including the NASA Exceptional Scientific Achievement Medal, a Guggenheim Fellowship, and honors from organizations such as the American Astronomical Society and the Geological Society of America. He has delivered invited lectures at venues including Royal Society, American Geophysical Union meetings, and symposia hosted by International Astronomical Union working groups on planetary exploration.

Personal life and outreach activities

Squyres has participated in public outreach through platforms such as documentary programs produced by PBS, talks with institutions like Smithsonian Institution and American Museum of Natural History, and appearances at science festivals coordinated with World Science Festival and university outreach offices. He has been involved in advocacy for planetary science funding in forums attended by representatives from United States Congress committees on science and by agencies such as the National Aeronautics and Space Administration. His personal interests include field geology expeditions, collaboration with museum curation teams, and mentorship of young scientists who have proceeded to roles at NASA Jet Propulsion Laboratory, European Space Agency, and academic institutions.

Category:American planetary scientists Category:Cornell University faculty