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.
Phase of Moon GIF - A 100 by 100 pixel GIF image of the current Moon phase on a black background, from the United States Naval Observatory. Accessible as a URL for embedding in web pages.
The Space Place Images of Earth's Moon for the Classroom - NASA Moon images with captions showing different phases, suitable for printing and classroom display.
How long does each phase of the Moon last? - 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.
StarChild Moonlight Madness - 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.
Moon Phases 5000 Year Catalog - NASA Goddard Spaceflight Center (GSFC) Five Millennia Catalog of the phases of the Moon.
Astronomical calendar - On-line calculator for Moon/Sun Rise/Set, moon phase, sidereal time and Julian day.
Sky & Telescope: Dating van Gogh's Moonrise - Article identifying the exact date and time of van Gogh's Moonrise painting, based on Moon phase calculations.
Sky & Telescope: Greek Marathon Dated from Phase of Moon - Describes how astronomers used phase of Moon calculations and ancient Greek religious festivals to date the original Marathon run.
Phases of the Moon Exercise - Shows the Moon in eight positions around the Earth to shade in the dark area and the unobservable side.
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