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.
Article identifying the exact date and time of van Gogh's Moonrise painting, based on Moon phase calculations.
Describes how astronomers used phase of Moon calculations and ancient Greek religious festivals to date the original Marathon run.
NASA Moon images with captions showing different phases, suitable for printing and classroom display.
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.
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.
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.
NASA Goddard Spaceflight Center (GSFC) Five Millennia Catalog of the phases of the Moon.
On-line calculator for Moon/Sun Rise/Set, moon phase, sidereal time and Julian day.
Science /
Astronomy /
Calendars_and_Timekeeping
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