What Exactly Is a Blue Moon?

February 6th, 2011

SpaceEveryone’s heard the phrase, “once in a blue moon.” Turns out it has nothing to do with the color of the moon at all, but instead refers to either two full moons within one calendar month or four full moons within a single season. The linked article attempts to explain it all, but concludes that the no single, precise definition exists. On a side note, I suggest you check out the memorable short story, “Blued Moon,” by Connie Willis, where incredible coincidences occur in Chugwater, Wyoming after chemical plant emissions turn the moon blue.

Thanks to Ciro for this link.

Link: http://www.space.com/…

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