What causes a lunar eclipse?..?...?

MIKE MOSS SAYS:      Mika,    A lunar eclipse occurs when the un, earth ann moon are precisely lined up so that the moon passes through the earth's shadow. This block direct light from the sun and leaves the moon darkened for a time. The moon may only brush through a portion of the earth's shadow, in which case the event is called a partial eclipse.

You can read lots more about lunar eclipses and get infomation on historical and upcoming events at

http://www.mreclipse.com/Special/LEprimer.html

and

http://sunearth.gsfc.nasa.gov/eclipse/eclipse.html