4 / 18

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

September 1, 2012

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.