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 Active Galactic Nu (1) Clusters of Galaxies/Large-scale Struc (1) Exopla (1) Heliophy (1) Star Formation & Evolu (1) State Facet State City Green Bank (1) Greenbelt (1) Lancaster (1) Pittsburgh (2) Villanova (1) Washington (1) Facet City Membership Class Facet Membership Class Division Facet Division