网站简介：From The Nine Planets multimedia tour of the solar system.
网站简介：Sunrise and sunset times in major cities in the world for the next 60 days..
网站简介：Myths, legends, and history of the constellations.
网站简介：Organization, events, publications, planetaria worldwide, and resources.
网站简介：News, multimedia, mission, events, and education with information on the earth, sun, and solar system.
网站简介：Contains both original data and descriptions for NASA's past missions to explore the cosmic background radiation, notably about the Cosmic Background Explorer (COBE) satellite.
网站简介：Providing instructive experiences encouraging participant interaction with hands-on physical science exhibits. Includes details of displays, educational programs, a visitor's guide, events, memberships and newsletters. Located in Bridgeport.
网站简介：Manufacturer in Japan of a varied selection of telescopes, mounts, binoculars and spotting scopes.es.
网站简介：The leading amateur meteor organization in the world. Information about observing techniques, meteor showers, and the meteor community. Includes links to other web pages on meteor astronomy.
网站简介：Sells telescopes, binoculars and accessories for astronomy and terrestrial use, backed up by free, friendly advice and support. Located in the UK.
网站简介：Software system for the reduction and analysis of astronomical data.
网站简介：Featuring astronomical information, staffing, and computing information.
网站简介：Departments, projects, people, publications, and data.
网站简介：Simple map of constellations and sky objects.
网站简介：Teaches children the wonders of astronomy through total solar eclipses. Essays from kids worldwide, teach section for classrooms, and gallery of past eclipses.
网站简介：Interactive astronomy curriculum to help teachers inspire and engage astronomy and space science students across all levels of knowledge and ability.
网站简介：Online Store: binoculars, rifle scopes, spotting scopes, laser rangefinders, night vision, scopes, Hunting Gear
网站简介：Teacher workshops, public and school visits, volunteer information, and astronomy links.
网站简介：Is responsible for the efficient collection, checking, and dissemination of astrometric observations and orbits for minor planets and comets, via the Minor Planet Circulars (issued monthly) and the Minor Planet Electronic Circulars (issued as necessary).
网站简介：Statistics, other information, and links, from Nine Planets website.
网站简介：Terrestrial and astronomical telescopes, binoculars, microscopes, night vision equipment and other optical instruments, plus an equipment repair service. Located in the UK.
网站简介：Comet and minor planet astrometry and photometry, including NEO's and PHA's.
网站简介：Article from Wikipedia on the American astronomer, astrophysicist, author and successful popularizer of astronomy, astrophysics and other sciences.
网站简介：Portable planetarium and low-cost hands-on science materials.
网站简介：Software and space weather services, self study classes, aurora reports, aurora/space weather discussion forum.