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The term eclipse is most often used to describe either a solar eclipse, when the [http://en.wikipedia.org/wiki/Moon Moon's] [[shadow]] crosses the [[Earth]]'s surface, or a lunar eclipse, when the Moon moves into the shadow of Earth. However, it can also refer to such events beyond the Earth-Moon system: for example, a planet moving into the shadow cast by one of its moons, a moon passing into the shadow cast by its host [[planet]], or a moon passing into the shadow of another moon. A [http://en.wikipedia.org/wiki/Binary_Star binary star] system can also produce eclipses if the plane of their orbit intersects the position of the [[observer]].[http://en.wikipedia.org/wiki/Eclipse]
The term eclipse is most often used to describe either a solar eclipse, when the [http://en.wikipedia.org/wiki/Moon Moon's] [[shadow]] crosses the [[Earth]]'s surface, or a lunar eclipse, when the Moon moves into the shadow of Earth. However, it can also refer to such events beyond the Earth-Moon system: for example, a planet moving into the shadow cast by one of its moons, a moon passing into the shadow cast by its host [[planet]], or a moon passing into the shadow of another moon. A [http://en.wikipedia.org/wiki/Binary_Star binary star] system can also produce eclipses if the plane of their orbit intersects the position of the [[observer]].[http://en.wikipedia.org/wiki/Eclipse]
== External links ==
* [http://www.phys.uu.nl/~vgent/eclipse/eclipsecycles.htm A Catalogue of Eclipse Cycles]
* [http://www.hermit.org/Eclipse/when_search.shtml Search 5,000 years of eclipses]
* [http://sunearth.gsfc.nasa.gov/eclipse/eclipse.html NASA eclipse home page]
* [http://www.eclipses.info International Astronomical Union's Working Group on Solar Eclipses]
* [http://www.markstravelnotes.com/travelogues/eclipse_chasing/ Mark's eclipse chasing website]
* [http://xjubier.free.fr/en/site_pages/SolarEclipsesGoogleMaps.html Interactive eclipse maps site]
===Image galleries===
* [http://www.perseus.gr/Astro-Eclipses.htm Solar and Lunar Eclipse Image Gallery]
* [http://www.williams.edu/astronomy/eclipse Williams College eclipse collection of images]
* [http://www.zam.fme.vutbr.cz/~druck/Eclipse/ Prof. Druckmüller's eclipse photography site]
[[Category: Astronomy]]
[[Category: Astronomy]]