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Hermit.org Science: Mechanics of Lunar Eclipses
An good site for information about Lunar Eclipses, with excellent diagrams. This page has the best viewing graphics, but a printable page can be easily selected.
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Lunar Eclipses for Beginners
What is a lunar eclipse? What causes eclipses? How often do eclipses happen and when is the next lunar eclipse? You'll find the answers to these questions and more on this site on lunar eclipses.