Phases of the Moon and Percent of the Moon Illuminated
Pictures, animations, and brief comments.
Correct Time and Moon Phase
From the atomic clock at the United States Naval Observatory.
Moonstick Information Site
Describes a slide rule Moon phase calendar accurate over 8000 years into the past or future, and provides other methods of computing astronomical information.
Moon Phases
Information and Perl script to calculate moon phases including phase illumination age distances angular diameter new/full moon calculation
Phase of Moon
Displays the phase of the Moon in a browser window, with times of last and next Full Moon and New Moon.
Xphoon
Xphoon sets the X-Windows root window image to a picture of the Moon in its current phase.
The UnMuseum's Ponzo and the Moon
Explains why the Ponzo Illusion makes the Moon appear larger when near the horizon.
Virtual Reality Moon Phase
The United States Naval Observatory (USNO) Moon phase display for the years 1800 through 2199.
Phases of the Moon Exercise
Shows the Moon in eight positions around the Earth to shade in the dark area and the unobservable side.
Saint Paul Public Schools Phase of Moon Test
Twenty-five questions about the Moon's phases and rotation with an answer key, geared to fifth-graders.
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