An independent US organization promoting astronomy and astronautics. Established in 1899, it has about 7 000 members as of 2017. The Division of Planetary Sciences, formed in 1968, is now its largest division, with more than 1 400 planetary scientists and astronomers, 20% of whom live abroad (latest 2010 data). The AAS's headquarters are in Washington, DC.

http://www.aas.org/ Detailed information about the organization and activities of the society, including their journals, meetings, and membership. Among the resources is an interactive database that allows visitors to search for Web sites and materials that have been reviewed by AAS members.