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 Supernovae (1) (-) GRBs (1) (-) High-Energy Pheno (1) State AB (1) AZ (2) CA (6) ME (1) NM (2) PA (1) VA (1) (-) GA (1) Facet State City Carrollton (1) Facet City Membership Class Graduate Student (1) (-) Full Emeritus Member (1) Facet Membership Class Division HAD (1) (-) DPS (1) Facet Division Showing 1-1 of 1 results George Sonneborn Full Emeritus Member Affiliation NASA GSFC State/Province GA Country United States