Member Directory The AAS maintains a membership directory to facilitate member interaction and to support the conduct of official Society business. Search directory for: Filter Results By Clear Filters Type of Science Star Formation & Evolu (5) Astronomy Educa (4) Galaxy Formation & Evolu (4) Exopla (3) GRBs (3) High-Energy Pheno (3) Supernovae (3) Active Galactic Nu (2) Interstellar Me (2) Solar System/Planetary Sci (2) Astrobio (1) Cosmo (1) Galactic Structure & Stellar Populat (1) Heliophy (1) (-) Clusters of Galaxies/Large-scale Struc (1) State AL (1) CA (3) CO (3) CT (2) HI (1) IL (1) IN (1) MN (1) NJ (1) NM (2) OH (1) OR (1) PA (2) TX (1) WA (1) (-) MA (1) Facet State City Cambridge (1) Facet City Membership Class AM (1) F (11) Full Member (2) GR (2) Undergrad Student (1) (-) Full Emeritus Member (1) Facet Membership Class Division HEAD (1) Facet Division Showing 1-1 of 1 results George Clark Full Emeritus Member Affiliation MIT State/Province MA Country United States