| Comet Shoemaker-Levy Collision with Jupiter: Extensive coverage of the event July 1994. Includes observations, reports, 1444 images, news releases and links. |
| British Astronomical Association Comet Section: News, recent observations, observing information and advice. |
| Canadian Comet Catchers: A list of comets discovered by Canadian astronomers. |
| Catalogue of Comet Discoveries: Downloadable catalog. Also news, reading list, articles, links. |
| Comet comet comet: Overview of comets, as described by a professional comet researcher. |
| Comet Information and the International Comet Quarterly: From the Smithsonian Astrophysical Observatory. News, observations, orbital data, comet names and designations, links. |
| Comet LINEAR: Offers report and observations of a breakup of a comet in July 2000. |
| Comet Observations: Catalogue of images, ordered by comet. |
| Comet Section of Germany: News, observations, analyses of current comets, images, archives, links. |
| Comet's Long Tail Tickles Ulysses: The solar polar orbit satellite observed tail of comet Hyakutake by means of magnetic fields and particle count anomalies. Article from Science News. |
| Deep Impact: Small Telescope Science Program (STSP): Resource for telescope observers involved in the Deep Impact space mission to comet Tempel 1. Provides observation campaign data and observer collaboration. |
| Exploring The Planets: Comets: History, orbits, composition, ways comets are studied, relation to meteor showers. Comets Halley, Shoemaker-Levy 9. From the National Air and Space Museum. |
| Glossary: Glossary of comet (and astronomical) terms. |
| How Stuff Works: Comet: Informative illustrated explanation of what comets are, what they are made of, where they come from and how to observe them. |
| Lists and Plots: Comets: Offers updated orbital data, lists and orbit diagrams. Includes near Earth objects and minor planets. |
| Nakano Note: Orbit computations for selected comets. |
| Small Comets: The original discovery and latest news about a new class of interplanetary bodies. |
| SOHO Sungrazers: Images of sun grazing comets from the Solar and Heliospheric Observatory. Also, background, archives, and how to interpret images and report new discoveries. |
| The International Comet Quarterly: Updated news letter on observation opportunities, designation of names and discoveries. Includes observation data and links. |
| Views of the Solar System: Comets: Basic features, data, discoveries, images and sections with specific information on selected comets. |
| Wikipedia: Comet: Encyclopedia entry covers physical characteristics, history. List of well-known comets. |
| Windows to the Universe: Comets: General information and data, pictures, details on the most interesting ones. |
Classical
