蓝月亮近日首次出现在万圣节 20 年份

蓝月亮近日首次出现在万圣节 20 年份

Stargazers are in for a treat when a blue 月亮 lights up the night sky on Halloween, the first time that has happened in nearly 20 年份.

A full moon has not occurred on All Hallow’s Eve since 2001 and will not occur again until 2039, 根据 Farmer’s Almanac. A blue moon is the second full moon in a month, NASA explains on its 网站.

The first full moon happened on Oct. 1, 2020, a harvest moon, 出现 “oppositethe Sun (in Earth-based longitude) 在 5:05 下午. EDT.

A passenger plane, with a full Harvest moon seen behind, makes its final landing approach towards Heathrow Airport in London. REUTERS/Toby Melville (REUTERS/Toby Melville)

A passenger plane, with a full Harvest moon seen behind, makes its final landing approach towards Heathrow Airport in London. REUTERS/Toby Melville (REUTERS/Toby Melville)

THE MOON IS ‘RUSTINGAND SCIENTISTS ARE STUNNED

Despite not actually being blue in color, there are two definitions for a blue moon: two in one calendar month and another, older definition, NASA notes. “An older definition of Blue moon is that it’s the third of four full moons in a single season,” the space agency wrote.

According to the first, more common definition, the last blue moon was in March 2018, 根据 EarthSky.org.

In addition to making a rare occurrence on Halloween, the blue moon will also be visible in most of the world for the first time in nearly 75 年份, experts have said. Skywatchers may also be able to see Mars, as the blue moon will be close to the Red Planet in the night sky, EarthSky.org added.

If a blue moon isn’t enough to satisfy stargazers on All HallowsEve, the solar system has another treat for them. 一个 asteroid the size of a 747 will safely fly past Earth on Saturday night as well.

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福克斯新闻’ James Rogers contributed to this story.

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