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 Astrobio (1) Astronomy Educa (1) Exopla (1) GRBs (1) Solar System/Planetary Sci (1) Supernovae (1) (-) High-Energy Pheno (1) State AB (1) AL (1) CA (6) CO (2) MA (2) MD (1) ND (1) NJ (2) NM (1) NY (1) OR (1) PA (1) UT (1) (-) GA (1) Facet State City Carrollton (1) Facet City Membership Class Undergrad 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