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Reference Terms
from Wikipedia, the free encyclopedia

Eclipse

An eclipse is an astronomical event that occurs when one celestial object moves into the shadow of another.

The term is most often used to describe either a solar eclipse, when the Moon's shadow crosses Earth's surface, or a lunar eclipse, when the Moon moves into the shadow of Earth.

Note:   The above text is excerpted from the Wikipedia article "Eclipse", which has been released under the GNU Free Documentation License.
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September 28, 2016

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updated 12:56 pm ET