The partial lunar eclipse is the longest since 1440 – .

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The partial lunar eclipse is the longest since 1440 – .


Lunar illumination: Sky watchers are preparing for the longest lunar eclipse in nearly 600 years.

The longest partial lunar eclipse in nearly 600 years, which will bathe the Moon in red, will be visible Thursday and Friday for a large slice of humanity.

The celestial show will see the Moon almost completely plunged into shadow as it moves behind the Earth, blushing 99% of its face.

The show will be on view across North America, as well as parts of South America, Polynesia, Australia and Northeast Asia.

Space scientists say sky watchers in those regions that enjoy a cloudless view will see the Moon fade slightly from 0602 GMT on Friday as it enters the Earth’s penumbra. outer shade.

An hour later, it will appear that someone has taken a giant bite of the lunar disk as it begins to move into shadow – complete shadow.

At 08:45 GMT, the Moon will appear red, with the brightest coloring visible at the peak of the eclipse 18 minutes later.

The whole process is reversed as the Moon emerges from the shadows and continues its endless journey around our planet.

Dramatic red is caused by a phenomenon known as “Rayleigh scattering,” where shorter blue light waves from the Sun are scattered by particles in the Earth’s atmosphere.

Longer red light waves easily pass through these particles.

“The more dust or clouds there is in Earth’s atmosphere during the eclipse, the redder the Moon will appear,” says a NASA website.

“It’s as if all the sunrises and sunsets in the world are projected onto the moon. “

From the moment the actual eclipse begins – when the Moon enters Earth’s shadow – until its end, it will take more than three hours and 28 minutes.

It is the longest partial eclipse since 1440 – when Johannes Gutenberg invented his printing press – and will only be beaten in the distant future of 2669.

The good news for Moonwatchers, however, is that they won’t have to wait that long for another show – there will be a longer Total Lunar Eclipse on November 8 next year, according to NASA.

And better news for anyone who wants to watch is that no special equipment is needed, unlike solar eclipses.

Binoculars, telescopes, or the naked eye will give a decent view of the show, as long as the weather here on Earth plays ball.


Longest lunar eclipse in centuries to take place this week, NASA says


© 2021 AFP

Citation: Lunar illumination: The partial lunar eclipse is the longest since 1440 (2021, November 18) retrieved on November 18, 2021 from https://phys.org/news/2021-11-moon-partial-lunar-eclipse -longest.html

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