网站简介：Scale models kits of spacecrafts.
网站简介：Information on this foundation dedicated to providing research and educational access to radio and optical astronomy for a broad cross-section of users.
网站简介：A visual presentation of lunar eclipses by way of animated and static graphics.
网站简介：Provides a range of courses and programs for students planning careers in astronomy, space science, or related fields as well as for those wishing a non-technical introduction to this exciting field of science.
网站简介：Discusses telescopes, types, buying, and accessories.
网站简介：Information on basics, equipment, what to see, astrophotography, and links.
网站简介：Amateur astronomy club providing information on open houses and events, an observer's guide, and selected articles.
网站简介：Offers science data and project descriptions of a Helioseimology observation network.
网站简介：Deep sky, solar system, and terrestrial images, including equipment information, and helpful articles.
网站简介：A CD-ROM planetarium and star-charting program equally suited to both the casual stargazer and the serious amateur or professional astronomer, although its feature list will appeal especially to the more advanced user. [Commercial, demo available - Win95/98/NT]
网站简介：Useful astronomical links.
网站简介：Details of this Irish national space-interest association, with sky and space news, including details of upcoming events, links and general information.
网站简介：Manufactures the BORG line of telescopes, binocular scopes, spotting scopes and optical tube assemblies. Additional products include motorized altazimuth mounts and a variety of accessories.
网站简介：Contains images of the sun from the Solar and Heliospheric Observatory.
网站简介：Wikipedia article providing an overview of the astronomer's early life, his education, and his revolutionary theory that the earth was not the center of the universe.
网站简介：Plasma recombination lasers in rapidly cooled stellar atmospheres.
网站简介：Tools to help observers select targets and plan observations. Also, orbital elements, reference star catalog data and software, link to Lowell Observatory Near Earth Object Search (LONEOS).
网站简介：Articles about the Aurora and the Geomagnetic Field. [Norwegian, English, German]
网站简介：Specializes in the development and manufacture of UV-visual CCD spectrophotometers, thermoelectric and cryogenic cooled CCD cameras and analytical instrumentation for a wide range of applications.
网站简介：Mauna Loa Solar Observatory
网站简介：Upcoming events, newsletter, news, gallery, tips and techniques, resources, store, message board, and the sky tonight.
网站简介：General information, some statistical data and links.
网站简介：Network utilizing neutrino detectors to detect neutrino burst from supernova in order to provide a prompt alert to astronomers.
网站简介：Article from Wikipedia on this remnant that can result from the gravitational collapse of a massive star.
网站简介：Provides software (some free), books, and hands-on projects within areas of Jupiter, the Sun, Pulsars, and other areas.