Although the moon wasn’t actually colored blue, the rare event will not happen again until July 2015. Friday’s blue moon also coincided with a private service for Neil Armstrong, the first man to walk on the moon, who died Aug. 25 at age 82.
Aug. 31, 2012 A blue moon rises above the ancient Acropolis hill in Athens. Although the moon is not actually colored blue, the rare event occurs when there’s a second full moon in one calendar month. Louisa Gouliamaki/AFP/Getty Images Buy Photo