The goal of this organization is to foster international understanding through the universal fascination with astronomy. Includes information on their various philanthropic ventures, plus details of how to get involved or donate.

Directory of websites of astronomy organizations in the United States, Canada, United Kingdom, New Zealand, Australia, and Europe.

Serves as a forum for issues involving the fields of physics and astronomy.

An ESA mission to map the geometry of the dark Universe.

Provides society and membership information, a list of publications, links, and an online store.

Illinois-based nonprofit organization created to foster scientific literacy and to promote interest in the sciences.

Comprehensive resources, policy documents, news, activities of member states and details of reports available.