A full moon is seen in Islamabad, Pakistan on Jan. 29. The full moon this weekend, called the wolf moon, will be the brightest and biggest of the year.
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A full moon rises in the night sky during a lunar eclipse above the golden domes of the Orthodox Monastery of Caves in Kiev, Ukraine, on May 4, 2004.
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An airplane is silhouetted against a full moon in the sky over London on Jan. 1.
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A Sri Lankan Buddhist devotee offers prayers during a full moon at the Kelaniya Temple in Kelaniya, Gampaha district on Jan. 29. The predominantly Buddhist country marks every full moon as a key religious holiday or Poya Day.
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Ernest Coleman/The Cincinnati Enquirer/AP
A flock of birds takes flight over the City of Milford, Ohio as a full moon rises in the eastern sky.
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A blue moon, or the second full moon of the month, is seen over a church in Amman, Jordan on Dec. 31, 2009
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Ian Martens/The Canadian Press/Lethbridge Herald/AP/File
The moon rises behind bride Kailey Wilson as she gets a hand from her mom Maurene while having her picture taken on Dec. 11, 2008 in Lethbridge, Alberta, Canada.
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A rare blue moon is pictured in Los Angeles on Jan. 1. A Most years have twelve full moons which occur approximately monthly, but the blue moon occurs every two or three years.
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A full moon sets behind a hillside on Jan. 1, in Fairbanks, Alaska