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It was a Supermoon weekend!
The moon was full Sunday after being almost full Saturday night. It made its closest approach to the Earth -- the definition of a supermoon.
That combination made the moon seem about 14 percent larger in diameter than usual, NASA said. Supermoons typically appear about 30 percent brighter than the usual moon.
It was a particularly bright supermoon for the United States, thanks to the more intense sunlight that reflects off the moon in winter, NASA said.
As if that weren't enough: This supermoon, the only one visible in 2017, was also a Super Frost Moon.
This last full moon of the year is known as a Frost Moon, Cold Moon or Moon Before Yule. It doesn't always correspond with a supermoon (though it did in December 2016).
NASA, which apparently has a sense of humor, suggested dressing for the occasion. "As usual, the wearing of suitably celebratory celestial attire is encouraged in honor of the full Moon."