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 Solar System/Planetary Sci (14) Star Formation & Evolu (6) Exopla (4) Astrobio (3) Astronomy Educa (2) Clusters of Galaxies/Large-scale Struc (2) Heliophy (2) Active Galactic Nu (1) Cosmo (1) Galactic Structure & Stellar Populat (1) Galaxy Formation & Evolu (1) GRBs (1) Supernovae (1) (-) High-Energy Pheno (1) State CA (1) Facet State City San Ramon (1) Facet City Membership Class Alumni Affiliate (1) AM (2) Amateur Affiliate (2) E (3) F (14) Full Member (3) GR (6) Graduate Student (1) JR (1) Undergrad Student (5) (-) Full Emeritus Member (1) Facet Membership Class Division HEAD (5) HAD (1) (-) DPS (1) Facet Division Showing 1-1 of 1 results Cynthia Cheung Full Emeritus Member Affiliation NASA's GSFC State/Province CA Country United States