Astronomy

Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

Digital library portal for researchers in astronomy and physics, operated by the Smithsonian Astrophysical Observatory (SAO) under a NASA grant. ADS maintains three bibliographic collections containing more than 15 million records covering publications in astronomy and astrophysics, physics, and general science.

Contains detailed information about all names of topographic and albedo features on planets and satellites (and some planetary ring and ring-gap systems) that the International Astronomical Union (IAU) has named and approved from its founding in 1919 through the present time.

Since its launch into space in 1990, Hubble has been at the forefront of many new discoveries, and continues to uncover a universe of unexpected wonders.

Ultimate go-to site for everything from the “Image of the Day”, articles about missions, discoveries, and space technology, to videos, image galleries, NASA TV, and even Twitter feeds from astronauts.

Long-term archive of digital data products returned from NASA's planetary missions, and from other kinds of flight and ground-based data acquisitions, including laboratory experiments. All PDS-produced products are peer-reviewed, well-documented, and easily accessible via a system of online catalogs that are organized by planetary disciplines.

Virtual observatory on the Net generating images of any part of the sky at wavelengths in all regimes from Radio to Gamma-Ray.

Independent scientific and technical group in the United States dedicated to the advancement of space science and exploration.

The major organization of professional astronomers in North America.

International scientific and educational organization devoted to study the Sun, Moon, planets, asteroids, meteors, and comets.

Consortium of of 49 US institutions and 2 international affiliates that operates astronomical observatories and telescopes to enable discovery and excellence in research, to unify the astrophysics communities, and to promote public understanding of our universe and the benefits of scientific exploration.

American scientific and educational non-profit organization with members from over 40 countries.

International association of professional astronomers, active in professional research and education in astronomy. Also the only internationally recognized and accepted commission set up to record, change, and document the naming of all known astronomical bodies.

Independent, educational, grassroots, non profit organization dedicated to the creation of a spacefaring civilization.

American internationally active, non-governmental, nonprofit organization involved in research, public outreach, and political space advocacy for engineering projects related to astronomy, planetary science, and space exploration.

International student organization whose purpose is to promote space exploration and development through educational and engineering projects.