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 Astronomy Educa (2) Solar System/Planetary Sci (2) Star Formation & Evolu (2) Exopla (1) High-Energy Pheno (1) (-) Astrobio (1) (-) GRBs (1) (-) Supernovae (1) State (-) CA (1) Facet State City San Ramon (1) Facet City Membership Class F (2) GR (3) Graduate Student (1) Undergrad Student (1) (-) Full Emeritus Member (1) Facet Membership Class Division DPS (3) HEAD (2) DDA (1) (-) HAD (1) Facet Division Showing 1-1 of 1 results Cynthia Cheung Full Emeritus Member Affiliation NASA's GSFC State/Province CA Country United States