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About

Robert F. Sharrow is a leading aerospace engineer and instrument scientist whose work has been critical to NASA’s Mars exploration efforts. His primary research areas include planetary instrumentation, X-ray spectroscopy, and autonomous robotic sensor systems for extraterrestrial surfaces. Sharrow’s most significant contribution is his central role in developing the Planetary Instrument for X-Ray Lithochemistry (PIXL), a micro-focus X-ray fluorescence spectrometer aboard the Perseverance rover. The foundational paper describing PIXL has garnered 135 citations, underscoring its importance to the planetary science community. He also led the pre-flight geometric and optical calibration of PIXL, ensuring its precision on Mars. Beyond PIXL, Sharrow pioneered an autonomous optical sensor system that enables a robot arm to accurately position instruments relative to unknown surfaces—a breakthrough technology now used on the Mars rover. This work, cited 8 times, solves a critical challenge in robotic manipulation. Sharrow’s achievements exemplify the fusion of cutting-edge optics, image processing, and spaceflight engineering, making him a key figure in advancing in-situ planetary geochemistry.