Astronomy

• Asteroids --  a list of good scientific links.
• Astronomy Media Player -- "A selection of the best astronomy podcasts from around the world." Includes astronomy courses, observations of the night sky, "ask an astronomer" podcasts, and podcasts from observatories and space agencies.
• Astronomy Picture of the Day: complete with a brief explanation by an astronomer.
• AstroWeb: searchable astronomy, astrophysics database.
• Bradford Robotic Telescope
• Constants and Equations for Astronomical Use
• Great Images in Nasa --over a thousand high-quality photos, keyword or browse searchable.
• High Redshift Supernova -- images too.
• HubbleSite--the Space Telescope Science Institute's images from the Hubble spacecraft.
• History of Astronomy -- from psigate, links
• Imagine the Universe Dictionary-- a dictionary of astronomy and astrophysics from NASA's astronomy education page
• Infrared Astronomy--from NASA's Infrared Processing and Analysis Center, history, backgrounds, images, and current projects in infrared astronomy.
• Mars Images -- from the famed rover
• the Messier Objects : images from the Digital Sky Survey.
• N-Body Shop -- movie files of astronomical events.
• NASA Planetary Science Research Discoveries--is a site devoted to discoveries being made in planetary and space sciences through NASA-sponsored research. It contains feature stories, news links, a comprehensive archive of articles, glossary, search engine, subscription service, and comments page.
• The Nine Planets : A Multimedia Tour of the Solar System
• Official String Theory Web Page
• Peoria Astronomical Society--info on star names, black holes, constellations, and a good set of links to other astronomy sites.
• Physics and Astronomy reference -- "a comprehensive physics and astronomy online education, research and reference web site."
• Planck in a Nutshell -- Planck is the European Space Agency's mission to map the structure of the Cosmic Microwave Background, in unprecedented detail. Planck will constrain cosmological models and examine the birth of large-scale structure in the universe. .pdf
• Planetary Photojournal -- from the folks at JPL
• PSIGate Physical Sciences Information Gateway -- provides access to high quality internet resources, including current research, statistical data, articles, news, etc.  Searchable.
• Skylab Project -- includes the history, goals, images, and facts about the first 100 manned space flights.
• Sky Online--Sky-at-a-Glance tells you what astronomical events to be on the lookout for with your telescope. (And if you don't have a telescope, the "Backyard Astronomer" section will help you choose one).
• SkyWatching--day by day, what to look for in the sky that night. And since not everybody has a backyard telescope, they'll show you what the astronomical event looks like and explain a little about it.
• Sloan Digital Sky Survey -- the most ambitious astronomical survey project undertaken.  This project will map in detail one-quarter of the entire sky, determining positions of more than 100 million celestial objects.
• a Space Library--from NASA by way of the Jet Propulsion Lab, this site includes star backgrounds, space models, NASA mission artwork, solar system maps
• U.S. Naval Observatory -- sunrise/sunset calculations, the "Sky This Week", links to their library and other resources.
• World Wide Telescope -- with input from Microsoft, the site requires adobe flash player and that Java be enabled, but it is worth it! "sets a new standard in three-dimensional representation of vast amounts data plucked from space telescopes, the ease of navigation, the visual experience and features like guided tours narrated by experts."