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This category is for sites featuring astronomical information about the Moon's phases and their observation, as well as charts or programs for calculating the phase of the Moon.

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Comet Shoemaker-Levy Collision with Jupiter

http://www2.jpl.nasa.gov/sl9/

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Wikipedia: Comet

http://en.wikipedia.org/wiki/Comet

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Catalogue of Comet Discoveries

http://www.comethunter.de/

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Nakano Note

http://www.oaa.gr.jp/~oaacs/nk.htm

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British Astronomical Association Comet Section

http://www.ast.cam.ac.uk/~jds/

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Views of the Solar System: Comets

http://www.solarviews.com/eng/comet.htm

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Small Comets

http://smallcomets.physics.uiowa.edu/

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