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 (2) Exopla (2) Galactic Structure & Stellar Populat (2) Solar System/Planetary Sci (2) Astronomy Educa (1) Galaxy Formation & Evolu (1) GRBs (1) Heliophy (1) Star Formation & Evolu (1) (-) High-Energy Pheno (1) (-) Supernovae (1) State AB (1) Abu Dhabi (1) AL (2) AZ (6) CA (17) CO (2) CT (3) FL (2) IL (1) LA (1) MA (5) Madhya Pradesh (1) MD (4) ME (1) MI (2) NC (2) ND (1) NJ (2) NM (2) NV (1) NY (5) OH (1) ON (1) OR (1) PA (2) TN (1) TX (2) UT (1) VA (5) VT (1) WA (6) WI (2) (-) GA (1) Facet State City Carrollton (1) Facet City Membership Class Full Emeritus Member (1) Facet Membership Class Division HEAD (5) HAD (1) LAD (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