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How long does each phase of the Moon last? - http://spaceplace.jpl.nasa.gov/en/kids/phonedrmarc/2004_march.shtml
NASA's Dr. Marc of The Space Place answers questions about Moon phases and the lunar month. Includes GIF animation of the Moon going through its phases. |
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The Moon: It's Just a Phase It's Going Through - http://www.astrosociety.org/education/publications/tnl/12/12.html
The Astronomical Society of the Pacific's detailed explanations of the Moon's phases, including positions of the Moon in southern and northern hemispheres during its different phases and the times of day each phase is visible. |
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StarChild Moonlight Madness - http://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level2/moonlight.html
NASA's Star Child site page that describes the phases of the Moon. Ends with a test to identify the eight Moon phases and their order. |
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Moonstick Information Site - http://www.moonstick.com/
Describes a slide rule Moon phase calendar accurate over 8000 years into the past or future, and provides other methods of computing astronomical information. |
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Moon Phases - http://search.cpan.org/~brett/Astro-MoonPhase/MoonPhase.pm
Information and Perl script to calculate moon phases including phase illumination age distances angular diameter new/full moon calculation |