Dr. Philip Christensen is a professor of planetary geoscience at Arizona State University with research interests centered around understanding the history and evolution of Mars, asteroids, icy moons, and other bodies. His work is focused on building infrared cameras and spectrometers, six of which have flown on NASA missions, with two more being built. These instruments map surface composition, search for habitable environments, and help select future landing sites. They have mapped the global mineralogy of Mars and discovered ancient lake deposits and sites of recent snow accumulation. Dr. Christensen is a Fellow of the American Geophysical Union and Geological Society of America, received the Geological Society of America’s G.K. Gilbert Award, NASA’s Exceptional Scientific Achievement Medal, and NASA’s Public Service Medal.