Astronomy & Astrophysics

The American Astronomical Society (AAS) is the major organization of professional astronomers in North America. AAS publishes Astrophysical Journal and Astrophysical Journal Letters, among others.

A consortium of 49 US institutions and 3 international affiliates whose role is to establish, nurture, and promote public observatories and facilities that advance innovative astronomical research.

The ASP was founded in 1889, the first national astronomical organization to be established in the United States.

The AAS has helped central Texas astronomers and the public enjoy the night sky since 1969.

Organization supporting amateur astronomers in the UK.

The ESA is the EU's equivalent of NASA.

Founded in 1973, an ongoing collaboration between the Smithsonian Astrophysical Observatory and Harvard College Observatory.

Founded in 1919, the IAU's mission is to promote and safeguard the science of astronomy in all its aspects, including research, communication, education and development, through international cooperation. Among the other tasks of the IAU are the definition of fundamental astronomical and physical constants; unambiguous astronomical nomenclature; and serving as the international authority for assigning designations to celestial bodies and surface features on them.

NSS is a non-profit organization dedicated to the creation of a spacefaring civilization.

The RAS was founded in 1820 and publishes the Monthly Notices (MNRAS).

SAF was founded in 1887 by Camille Flammarion (1842–1925). Flammarion’s objectives remain unchanged to this day: “to popularize the sciences of the Universe and to involve amateurs in their advancement.”