Lists and Plots: Comets
- Offers updated orbital data, lists and orbit diagrams. Includes near Earth objects and minor planets.
- http://cfa-www.harvard.edu/iau/lists/CometLists.html

Comet Observations
- Catalogue of images, ordered by comet.
- http://www.theastronomer.org/comets.html

Glossary
- Glossary of comet (and astronomical) terms.
- http://cfa-www.harvard.edu/icq/ICQGlossary.html

Wikipedia: Comet
- Encyclopedia entry covers physical characteristics, history. List of well-known comets.
- http://en.wikipedia.org/wiki/Comet

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.
- http://www.nasm.si.edu/ceps/etp/comets/

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.
- http://ares.nrl.navy.mil/sungrazer/

Comet Section of Germany
- News, observations, analyses of current comets, images, archives, links.
- http://www.fg-kometen.de/fgk_hpe.htm

Catalogue of Comet Discoveries
- Downloadable catalog. Also news, reading list, articles, links.
- http://www.comethunter.de/

Nakano Note
- Orbit computations for selected comets.
- http://www.oaa.gr.jp/~oaacs/nk.htm

Canadian Comet Catchers
- A list of comets discovered by Canadian astronomers.
- http://www3.ns.sympatico.ca/dave.chapman/CanCom.html

Comet comet comet
- Overview of comets, as described by a professional comet researcher.
- http://www.ifa.hawaii.edu/faculty/jewitt/comet.html

British Astronomical Association Comet Section
- News, recent observations, observing information and advice.
- http://www.ast.cam.ac.uk/~jds/

Comet Information and the International Comet Quarterly
- From the Smithsonian Astrophysical Observatory. News, observations, orbital data, comet names and designations, links.
- http://cfa-www.harvard.edu/icq/icq.html

Windows to the Universe: Comets
- General information and data, pictures, details on the most interesting ones.
- http://www.windows.ucar.edu/tour/link=/comets/comets.html

Views of the Solar System: Comets
- Basic features, data, discoveries, images and sections with specific information on selected comets.
- http://www.solarviews.com/eng/comet.htm

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.
- http://sciencenews.org/20000408/fob1.asp

Small Comets
- The original discovery and latest news about a new class of interplanetary bodies.
- http://smallcomets.physics.uiowa.edu/

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.
- http://www.howstuffworks.com/comet.htm