Phil Christensen

Phil Christensen
photo courtesy NASA/JPL-Caltech (2005)
Born	1953 Utah
Nationality	United States
Alma mater	University of California, Los Angeles
Scientific career
Fields	Planetary geology
Institutions	Arizona State University

Philip Russel Christensen is a geologist whose research interests focus on the , physical properties, processes, and morphology of planetary surfaces, with an emphasis on Mars and the Earth. He is currently a Regents' Professor and the Ed and Helen Korrick Professor of Geological Sciences at Arizona State University (ASU).

Christensen earned his B.S. degree in Geology from the University of California, Los Angeles in 1976. He earned his M.S. in 1978 and his Ph.D. in 1981 in Geophysics and Space physics, both from the University of California, Los Angeles.

Along with serving on the faculty of the Department of Geology at Arizona State University since 1981, Christensen is the principal investigator for the Mars Global Surveyor Thermal Emission Spectrometer (TES), the Mars Odyssey THEMIS, the Europa Clipper Europa Thermal Emission Imaging System instruments, as well as a co-investigator for the Mars Exploration Rovers, responsible for the Mini-TES instruments. He also serves on the research staff of the Center for Meteorite Studies museum on the ASU campus and is the director of the Mars Space Flight Facility.

His discovery (based on Thermal Emission Spectrometer data) of crystalline hematite in Meridiani Planum was instrumental in that area's choice as the landing site for the Mars Exploration Rover Opportunity.