Comet Shoemaker-Levy Collision with Jupiter -  .

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.

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.

The International Comet Quarterly - - Updated news letter on observation opportunities, designation of names and discoveries. Includes observation data and links.

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 Solar System in Actions: Comets - - Basic features and some more information on selected comets.

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.

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. (April 8, 2000)