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 Interstellar Me (1) Star Formation & Evolu (1) (-) Astrobio (1) State (-) MD (1) Facet State City Baltimore (17) Bern (1) Bethesda (2) Catonsville (1) College Park (5) Crownsville (1) Derwood (1) Elkton (1) Germantown (2) Greenbelt (20) Hampstead (1) Hyattsville (1) Kalamazoo (1) Laurel (2) Marriottsville (1) Middletown (1) Pasadena (1) Santa Cruz (1) Silver Spring (5) Tempe (1) Towson (2) Washington (5) (-) Damascus (1) Facet City Membership Class E (1) Facet Membership Class Division DPS (1) LAD (1) Facet Division Showing 1-1 of 1 results Hal Heaton E Affiliation Johns Hopkins Univ. (Ret.) State/Province MD Country United States