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 Galaxy Formation & Evolu (1) State Facet State City Baltimore (7) Bethesda (1) Greenbelt (2) Laurel (1) Marriottsville (1) Silver Spring (1) Washington (2) Facet City Membership Class E (1) Facet Membership Class Division Facet Division