Astronomy, Astrophysics and related resources.: Websites

The American Astronomical Society (AAS), established 1899, is the major organization of professional astronomers in North America. The basic objective of the AAS is to promote the advancement of astronomy and closely related branches of science.

Largest general astronomy society in the world, with members from over 70 nations. Board of Directors is comprised of members of the astronomy, educational, and amateur communities.

The purpose of the society is to contribute to and promote the advancement of astronomy, in its broadest sense, in Europe, by all suitable means...

The Exoplanet Data Explorer is an interactive table and plotter for exploring and displaying data from the Exoplanet Orbit Database. The Exoplanet Orbit Database is a carefully constructed compilation of quality, spectroscopic orbital parameters of exoplanets orbiting normal stars from the peer-reviewed literature, and updates the Catalog of nearby exoplanets.

Created from ever growing need for international cooperation of meteor amateur work. Collection of meteor observations by several methods from all around the world ensures the comprehensive study of meteor showers and their relation to comets and interpla

The International Astronomical Union (IAU) was founded in 1919. Its mission is to promote and safeguard the science of astronomy in all its aspects through international cooperation.

Inspires and involves the world's public in space exploration through advocacy, projects, and education.

A catalogue of all discovered extra-solar planets. It is a new kind of astronomical database, based on small text files and a distributed version control system. It is decentralized and completely open. Contribution and corrections are welcome. The Open Exoplanet Catalogue is furthermore the only catalogue that can correctly represent the orbital structure of planets in arbitrary binary, triple and quadruple star systems as well as orphan planets.