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) Star Formation & Evolu (1) (-) Interstellar Me (1) State (-) MD (1) Facet State City Baltimore (1) Bethesda (1) Greenbelt (4) Kalamazoo (1) Laurel (1) (-) Damascus (1) Facet City Membership Class E (1) Facet Membership Class Division LAD (1) (-) DPS (1) Facet Division Showing 1-1 of 1 results Hal Heaton E Affiliation Johns Hopkins Univ. (Ret.) State/Province MD Country United States