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 GRBs (1) High-Energy Pheno (1) (-) Supernovae (1) State GA (1) Facet State City Boulder (1) Calgary (1) Charlottesville (1) College Station (1) Gainesville (2) Hebron (1) Incline Village (1) Pasadena (1) Richmond (1) San Ramon (1) Tucson (1) (-) Carrollton (1) Facet City Membership Class (-) Full Emeritus Member (1) Facet Membership Class Division DPS (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