Informative illustrated explanation of what comets are, what they are made of, where they come from and how to observe them. www.howstuffworks.com/comet.htm
The solar polar orbit satellite observed tail of comet Hyakutake by means of magnetic fields and particle count anomalies. Article from Science News. sciencenews.org/20000408/fob1.asp
From the Smithsonian Astrophysical Observatory. News, observations, orbital data, comet names and designations, links. cfa-www.harvard.edu/icq/icq.html
Images of sun grazing comets from the Solar and Heliospheric Observatory. Also, background, archives, and how to interpret images and report new discoveries. ares.nrl.navy.mil/sungrazer
History, orbits, composition, ways comets are studied, relation to meteor showers. Comets Halley, Shoemaker-Levy 9. From the National Air and Space Museum. www.nasm.si.edu/ceps/etp/comets
Resource for telescope observers involved in the Deep Impact space mission to comet Tempel 1. Provides observation campaign data and observer collaboration. deepimpact.astro.umd.edu/STSP
Updated news letter on observation opportunities, designation of names and discoveries. Includes observation data and links. cfa-www.harvard.edu/cfa/ps/icq.html