| Astronomy Online Gives overview of the solar system, the Milky Way galaxy, extrasolar planets, cosmology and astrophotography. Includes images, additional resources, and forums. |
| Astronomy Today Information and articles on astronomy, space and related topics. Also features a friendly forum and a telescope buyer's FAQ page. |
| AstroWeb Astronomical internet resources from the National Radio Astronomy Observatory. |
| Eric Weisstein's World of Astronomy A web encyclopedia. Over 500 entries, ranging from definitions to full articles. |
| Infrared Astronomy All about infrared astronomy from NASA's infrared astronomy center: Discovery of infrared, what is infrared and infrared astronomy, history, the infrared universe, gallery, activities, discoveries, missions and a lot of links to IR astronomy sites. |
| Logarithmic Maps of the Universe Show universe in terms of distance from Earth center. Includes such things as satellites, planets, stars, nebulae, and galaxies, out to cosmic microwave background radiation from the Big Bang. |
| Space.com - The Greatest Myths, Hoaxes & Mysteries in Astronomy and Space Science Article briefly discussing 21 topics. |
| Stars and Planets Information about interesting stars and planets in the galaxy, as well as astral bodies outside the Milky Way. Includes photos. |
| The Naming of Stars Leaflet from Royal Greenwich Observatory. |