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Once in a Blue Moon (2)

People's Daily Online)  15:44, September 04, 2012

A full moon ascends at Rio de Janeiro’s night on the last day of August. (Xinhua/AFP)

Edited and translated by Chen Lidan, People's Daily Online

The “blue moon” is an astronomical term that refers to the third full moon in a season that has four full moons instead of the usual three and in just this past August, sky-watchers enjoyed the second full moon within a single month that qualifies it as a blue moon. The next “blue moon” is supposed to show up in July 2015.

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