희귀 한 할로윈 블루 문, 스카이 워처 스릴

희귀 한 할로윈 블루 문, 스카이 워처 스릴

A rare Halloween blue moon has been thrilling skywatchers across the globe.

The last time a blue moon occurred on Halloween was in 2001, 에 따르면 Farmer’s Almanac, and will not happen again until 2039.

As the second full moon of the month, it is classified as a blue moon. “In recent years, people have been using the name Blue moon for the second of two full moons in a single calendar month,” explains NASA, on its 웹 사이트. “An older definition of Blue moon is that it’s the third of four full moons in a single season.”

BLUE MOON TO APPEAR ON HALLOWEEN FOR THE FIRST TIME IN NEARLY 20 연령

The month’s other full moon, the “harvest moon,” occurred on Oct. 1. Old Farmer’s Almanac notes that the harvest moon is the full moon closest to the beginning of fall or the autumnal equinox.

A rare Halloween blue moon moon rises over a bank of lights at Falcon Stadium in the second half of an NCAA college football game between Air Force and Boise State, 토요일, 10 월. 31, 2020, at Air Force Academy, Colo.

A rare Halloween blue moon moon rises over a bank of lights at Falcon Stadium in the second half of an NCAA college football game between Air Force and Boise State, 토요일, 10 월. 31, 2020, at Air Force Academy, Colo. (AP 사진 / David Zalubowski)

Skygazers, 하나, should not expect the Halloween blue moon to be, well … blue. “Most Blue Moons look pale gray and white, indistinguishable from any other Moon you’ve ever seen,” explains NASA.

The term “blue moon” evolved to denote something that is absurd, 에 따르면 Space.com, citing Philip Hiscock, a folklorist at the Memorial University of Newfoundland, 안에 2012 article in Sky & Telescope 매거진.

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The full moon rises over the outskirts of Frankfurt, 독일, 토요일, 10 월. 31, 2020. The full moon is known as a Blue Moon. (AP Photo/Michael Probst)

The full moon rises over the outskirts of Frankfurt, 독일, 토요일, 10 월. 31, 2020. The full moon is known as a Blue Moon. (AP Photo/Michael Probst)

In rare circumstances, 하나, the moon can look blue. “A truly-blue Moon usually requires a volcanic eruption,” explains NASA. “Back in 1883, 예를 들면, people saw blue moons almost every night after the Indonesian volcano Krakatoa exploded with the force of a 100-megaton nuclear bomb. Plumes of ash rose to the very top of Earth’s atmosphere, and the Moon … it turned blue!”

Fox News’ Chris Ciaccia contributed to this article.

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