County Armagh, Northern Ireland. 31 January 2018. A blue moon - a second full moon in a calendar month - which is also a supermoon as its orbit to the Earth is closer than normal, shines brightly between passing clouds in Northern Ireland. Because there is also a lunar eclipse tonight the moon is also referred to a "blood moon" because of the reddish tinge it takes on whenever sunlight in the Earth's atmosphere is reflected onto the moon. Credit: David Hunter/Alamy Live News.

- Image ID: M1M0WK
County Armagh, Northern Ireland. 31 January 2018. A blue moon - a second full moon in a calendar month - which is Stock Photo
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County Armagh, Northern Ireland. 31 January 2018. A blue moon - a second full moon in a calendar month - which is also a supermoon as its orbit to the Earth is closer than normal, shines brightly between passing clouds in Northern Ireland. Because there is also a lunar eclipse tonight the moon is also referred to a "blood moon" because of the reddish tinge it takes on whenever sunlight in the Earth's atmosphere is reflected onto the moon. Credit: David Hunter/Alamy Live News.
David Hunter / Alamy Stock Photo
Image ID: M1M0WK
Location: The Moon