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 (1) High-Energy Pheno (1) Solar System/Planetary Sci (1) Supernovae (1) (-) GRBs (1) State AB (1) AZ (1) CA (3) CO (1) Drenthe (1) FL (2) IL (1) MA (1) MD (1) NV (1) (-) GA (1) Facet State City Carrollton (1) Facet City Membership Class Graduate Student (1) (-) Full Emeritus Member (1) Facet Membership Class Division DPS (1) HEAD (1) (-) HAD (1) Facet Division Showing 1-1 of 1 results George Sonneborn Full Emeritus Member Affiliation NASA GSFC State/Province GA Country United States