Named in honor of Anny-Chantal Levasseur-Regourd (1945– ), professor at Paris VI University. An incisive planetary scientist, Levasseur-Regourd works at the Service d’Aéronomie of the CNRS. She was selected as an astronaut, though her main scientific interest concerns the interplanetary medium, the physics of comets and the light-scattering properties of dust. Levasseur-Regourd has been principal investigator for several space experiments, inlcuding the Halley Optical Probe of the Giotto mission. Through her research and teaching, she actively encourages future generations of scientists. (M 27461) _ _.