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About

Michel Fleury is an instrumental astronomer whose work has significantly advanced the field of exoplanet detection and precision spectroscopy. His primary research focuses on the development of high-resolution spectrographs, particularly for radial velocity measurements that enable the discovery and characterization of extrasolar planets. Fleury’s most notable contribution is his leading role in the design and construction of HARPS3, a state-of-the-art echelle spectrograph planned for installation on the roboticized Isaac Newton Telescope. This instrument, described in his highly cited 2016 paper (34 citations), achieves a remarkable resolution of R≈115,000 across a 380–690 nm wavelength range, setting new standards for precision in ground-based astronomy. The HARPS3 project, part of the Terra Hunting Experiment, aims to detect Earth-like planets around Sun-like stars, representing a leap forward in the search for habitable worlds. Fleury’s work bridges engineering and astrophysics, providing the astronomical community with tools capable of measuring stellar radial velocities with unprecedented accuracy. His contributions underscore the critical role of instrumentation in expanding our understanding of planetary systems beyond our own.