The American Astronomical Society (AAS) is an organization of professional astronomers working to provide astronomy education and promote scientific research. AAS is headquartered in Washington D.C. and publishes a number of different journals.
Since the organization's start in 1899 it has grown to more than 7,000 member and is still growing. As an organization they sponsor many student clubs and competitions as well as a number of grass-root science literacy programs. AAS is the main organizer of the CanSat student competition.