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About

Sandrine Sohy is a key figure in the hunt for habitable worlds beyond our solar system, specializing in the detection of terrestrial planets orbiting ultracool dwarf stars. As a core member of the SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars) project, she has made foundational contributions to the design and deployment of a global network of robotic 1-meter telescopes. Her work, detailed in highly cited papers (with over 130 combined citations), focuses on targeting the ~1,200 nearest ultracool dwarfs—stars so faint and cool they are ideal for revealing temperate, Earth-sized planets. Sohy played a pivotal role in establishing the SPECULOOS Northern Observatory, extending the survey’s reach to the northern skies and significantly increasing the number of potential planetary systems amenable to atmospheric characterization by next-generation observatories like the James Webb Space Telescope. Her efforts are directly paving the way for humanity’s first detailed study of the atmospheres of potentially habitable exoplanets.