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 Clusters of Galaxies/Large-scale Struc (1) Exopla (1) Galaxy Formation & Evolu (1) State Facet State City Chicago (2) Facet City Membership Class Full Member (1) GR (1) Facet Membership Class Division Facet Division