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Blue Moon Wows Observers Around the World (Photos)

The blue moon over Evergreen Valley in Olympia, Wash., was photographed Aug. 31, 2012 by Mary P. Bowman.

August's rare blue moon

A second full moon of the month, known as a "blue moon," gave skygazers a sight to behold on Friday, Aug. 31, 2012. It was the last blue moon until 2015.