Astronomy

The AAVSO coordinates, evaluates, compiles, processes, publishes, and disseminates variable star observations to the astronomical community throughout the world. Professional and Amateur collection, research, and analysis of variable star observations.

Established 1899, AAS is the major professional organization in North America for astronomers, other scientists and individuals interested in astronomy. Member Directory, Career services, Divisions and Education Services.

A medium for advancing and conducting work by both professional and amateur astronomers who share an interest in Solar System observations. Includes publications, programs, and image archive.  We welcome and provide services for all individuals interested in lunar and planetary astronomy.

The Astronomical League is composed of over two hundred and forty local amateur astronomical societies from all across the United States. Information on national conventions (ALCons), member societies, regions, Astronomy Day, and awards.

Founded in 1892, is the oldest society of its kind in Australia. Its objectives are to promote the Science of Astronomy. The Society occupies a number of permanent observatories in South Australia that house some of the largest telescopes in the state, and can bring smaller telescopes to schools and groups venues.

Disseminates astronomical information. The ASP has become the largest general astronomy society in the world, with members from over 70 nations. The Society increases the understanding and appreciation of astronomy by engaging scientists, educators, enthusiasts and the public to advance science and science literacy.

Founded in 1919, has a mission to promote and safeguard the science of astronomy through international cooperation. The organization is also the internationally recognized authority for assigning designations to celestial bodies and surface features on such bodies. The key activity of the IAU is the organization of scientific meetings.

A network of volunteers have cameras focused on the sky to create a 360 degree map of the planets and stars at one time. Data is fed into a computer and filtered for atmospheric interference. Page includes details of the procedure, as well as a discussion forum.

A nonprofit organization that promotes exploration of the solar system and the search for extraterrestrial intelligence. The Planetary Society creates ways for the public to have active roles in space exploration.

Key activities include research and observing planets, stars, celestial phenomena and the abatement of light pollution. Canada's leading astronomy organization bringing together over 4,000 enthusiastic amateurs, educators and professionals.

An international society of amateurs and professionals specialising in the observation of double stars and deep sky objects, founded in 1967. Membership open to anyone who shares the interests of the Society, subject to the payment of an annual subscription.

Exploring the universe of knowledge. Features topics such as Society, Nature, People, Science, and History with associated discussion groups. AbsoluteAstronomy.com is a free online information portal which provides reference information and interactive features for over 900,000 topics.