In 2020, an extraordinary event is about to happen to us. For the first time in 76 years, the full moon Halloween will be able to be admired all over the world, not just in a few locations.
Halloween has always brought about weird things and can be scary. But this year, the Halloween night sky will be a special picture, with nothing to do with pumpkins or makeup. It is the Blue Moon, which will be revealed on October 31, 2020.
The name "Blue Moon" does not actually mean that the Moon will give off a strange blue glow, but to explain a full moon. Normally, the moon would be full once a month. But in October this year, we will have 2 full moons: On October 1 and October 31. The rarity of this phenomenon has resulted in the English phrase once in a blue moon, meaning "very rare". Because the blue Moon is so rare, everyone who can see it is considered lucky!
According to the United States Aeronautics and Space Administration (NASA), the full moon will appear twice in October 2020. The second full moon that happens in the same month is called the Blue Moon, which will appear on Halloween this year.
"Most of these blue moons are gray and white, indistinguishable from any other moon you have seen. The second full moon of the month will not change properties," NASA explained. The moon's physics, therefore, its color is kept the same.
"The actual or at least bluish-blue moons as seen from Earth are likely to appear only when there was a volcanic eruption somewhere prior to this," NASA said.
Astronomer Jeffrey Hunt said this year's Halloween full moon will be able to be seen from around the world, not just in a few places. This phenomenon is last recorded to occur in World War II.
"When I teach, my students have the same idea that a full moon happens every Halloween," Hunt said. This is not entirely correct, it's just that popular culture makes it. We think so, he said, the last time the Halloween full moon was visible globally was in 1944. He wrote about the event on his website When the Curves Line Up.
Hunt said the Halloween full moon was visible in several locations in 1955 but excludes western North America and the western Pacific. Although this year's Halloween full moon will be seen all over the world, that doesn't mean everyone will be seen.
Residents living in the United States, India, all of Europe, and much of Asia will be able to see the full moon Halloween. However in Australia, only residents of Western Australia will see the full moon, and in the central and eastern part of the country will not be seen. The reason is the time zone difference.
Observers said, this year, the full moon Halloween will be very bright. So whether you live in a crowded urban area, or on a remote farm, you can see this amazing phenomenon.
In the near future, the full moon will appear on October 1, 2020, which Asian people call the Full Moon Moon. Therefore, the full moon of Halloween (October 31, 2020) is also known as 'Blue Moon' - the name of the second full moon appearing in the same calendar month.
If you miss seeing the Full Moon on October 31, 2020, you'll have to wait until 2039, or in the following years: 2058, 2077, and 2096 respectively.