Eclipse is an astronomical event which takes when an astronomical object is being temporarily obscured. This can happen when one celestial body passing into the shadow of another body or by having another body pass between it and the viewer.
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what does eclipse mean
any obscuration of light.
a reduction or loss of splendor, status, reputation, etc.: Scandal caused the eclipse of his career.
VERB (USED WITH OBJECT) [E·CLIPSED, E·CLIPS·ING.]
to cause to undergo eclipse: The moon eclipsed the sun.
to make less outstanding or important by comparison; surpass: a soprano whose singing eclipsed that of her rivals.
You've probably heard the term solar eclipse, and lunar eclipse; but what are eclipses? An eclipse is what happens when either the moon comes between the sun and the earth, or when the earth comes between the sun and the moon. You can find more information here: http://en.wikipedia.org/wiki/Eclipse