Steven Ruff

Steven Ruff is an Associate Research Professor in the School of Earth and Space Exploration at Arizona State University (ASU). His research focuses on planetary geology, specifically the mineralogy of Mars derived from thermal infrared spectroscopy. He investigates Mars' geologic history and potential for past habitability through fieldwork in Mars analog environments and laboratory analysis of samples. Ruff earned a B.S. in Geology from the University of Wisconsin, Madison (1985) and a Ph.D. in Geology from ASU (1998), with expertise in spectral data analysis from Mars missions. He has been involved in major Mars missions including the Mars Global Surveyor Thermal Emission Spectrometer and the Mars Exploration Rover's Mini-TES instrument.

His work combines field studies in volcanic regions like Chile with lab-based spectral analysis to better interpret Martian data. Current research emphasizes hydrothermal systems, ignimbrite deposits, and hot spring sinters as markers for ancient habitability. Ruff's contributions include pioneering spectral techniques and advancing understanding of Martian dust and carbonate/olivine-rich bedrock. His lab and fieldwork provide critical insights for future Mars exploration and astrobiology.