Computes the position, brightness, and other observable characteristics of celestial bodies, as well as the circumstances of astronomical phenomena. Includes information on calendars and related topics.

The use of multiple telescopes to produce high resolution images - commonly used at most modern observatories. A literature review article.

List of links for those, who want to examine theories that are on the fringe of accepted scientific thought that are related connected to astronomy. A few examples are astrology, UFO's, the "Face" on Mars, and ancient astronaut theory.

Get space and astronomy news, photos, and videos.

Astronomical internet resources from the National Radio Astronomy Observatory.

A web encyclopedia. Over 500 entries, ranging from definitions to full articles.

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.

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.

Leaflet from Royal Greenwich Observatory.

Fun facts and trivia relating to astronomy, space, science fiction movies. Most trivia items are submitted by users.