Moon rising over trees.
Image Credit: NASA/Aubrey Gemignani
Published: July 15, 2018
Historical Date: January 31, 2018

The Moon is seen as it sets behind the National Capitol Columns at the US National Arboretum on Wednesday, Jan. 31, 2018 in Washington.

This full Moon is unique for three reasons: it is the third in a series of supermoons, occurring when the Moon is closer to Earth in its orbit. It is also the second full moon of the month, commonly known as a blue moon.


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