How Lunar Eclipses Work (Infographic)

What makes the moon turn dark and red? Find out in this infographic.

A penumbral lunar eclipse occurs Friday, Oct. 18, 2013. See how to watch it live online here.

A total lunar eclipse occurs when the moon passes completely beneath Earth's shadow. On Dec. 10, 2011, the second of this year's two total lunar eclipses will occur, and will be visible in Asia, Australia, and will rise and set over Europe and North America, respectively. The first total lunar eclipse of the year occured June 15.

Photos: The Long Total Lunar Eclipse of June 2011

Video: Inside the June 15 Total Lunar Eclipse

Photos: Amazing Views of November 2011 Solar Eclipse

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