Sure, you may know the “super blood wolf moon eclipse” is coming to a sky near you later this month. But what exactly does it mean?
Unquestionably, the main event is the total lunar eclipse, also known as an eclipse of the moon, which will start late on Sunday, Jan. 20 and finish early on Monday, Jan. 21.
This type of eclipse happens when the moon passes fully into the shadow of Earth.
Beyond that, despite all the hullabaloo over the various names, there’s still only one moon. There’s no separate super, blood, wolf or anything else moon.
Here’s some more info about this month’s sky spectacle:
Total lunar eclipse: You’ll have to stay up late for this event, so drink some coffee and grab some blankets.
A total lunar eclipse occurs when the moon and the sun are on exact opposite sides of Earth, according to NASA. When this happens, Earth blocks the sunlight that normally reaches the moon. Instead of that sunlight hitting the moon’s surface, Earth’s shadow falls on it.
Starting at 9:36 p.m. EST Jan. 20, skywatchers will notice a “little notch is taken out of the moon,” according to Brian Murphy, director of Indiana’s Holcomb Observatory & Planetarium and Butler University professor.
“The moon starts to enter into the earth’s shadow in a portion called the umbra when the sun is totally blocked out,” he said. “Earth is moving from right to left through the shadow.”
At 10:34 p.m., it moves into a partial eclipse, and starting at 11:41 p.m., the full eclipse begins; a maximum eclipse occurs at 12:12 a.m. Jan. 21. The total eclipse ends at 12:44 a.m.
Supermoon. A supermoon occurs when the full moon is at the closest point of its orbit to the Earth, which is also called the perigee.
That makes the moon look extra-close and extra bright – up to 14% bigger and 30% brighter than a full moon at its farthest point from Earth, known as the apogee, NASA said.
This is the first of three supermoons in 2019. The others will be on Feb. 19 and March 21. Of these, the Feb. 19 full moon will be the closest and largest full supermoon of 2019.
“Blood” moon. That is just the reddish color the moon will appear during the total lunar eclipse. Indeed, the moon won’t turn black or vanish from the sky; instead it will appear to be a “reddish copper color,” Murphy said, hence the name blood moon.
Although the moon is in Earth’s shadow, some sunlight still reaches the moon. The sunlight passes through Earth’s atmosphere, which causes our atmosphere to filter out most of the blue light.
Some sunlight reaches the Earth’s atmosphere, which envelops the moon and gives it the rich color.
“Wolf” moon. According to the Old Farmer’s Almanac, Native Americans called the February full moon the “wolf” moon because it appeared when wolves howled in hunger outside the villages.
This is an age-old practice, the almanac said. Ancient peoples commonly tracked the seasons by following the lunar calendar (vs. today’s solar calendar).
For millenniums, people across the world, including Native Americans, named the months after nature’s cues.
Full moon: Nothing special here: A full moon occurs every 28 days, so there have been a few billion full moons in Earth’s history. This is just the moment when the bright side of the moon entirely faces the Earth.
While the moon will be full precisely on Monday, Jan. 21, at 12:16 a.m. EST, according to space.com, it’ll still be plenty big through the rest of the night and for the next night or two. Just as it has for billions of years, the full moon will be visible to everyone around the world, barring pesky clouds.
And speaking of clouds, here’s the big question: Will they ruin the view? Unfortunately, since the big event is more than two weeks away, accurate weather forecasts are not possible yet.
If you miss this month’s total lunar eclipse, you have to wait until May 26, 2021, for the next one here in the U.S. The next partial lunar eclipse will be this summer, on July 16, but will only be visible in Africa and portions of Asia.
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