How to see the November lunar eclipse, the longest this century – Business Insider

Posted: November 17, 2021 at 12:49 pm

The moon enters the maximum eclipse in Glastonbury, England, on September 28, 2015. Matt Cardy/Getty Images

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The longest lunar eclipse of this century is coming this week.

During the early hours of Friday morning, Earth will pass between the sun and moon, casting a shadow over the latter. The eclipse will peak just after 4 a.m. Eastern Time, when our planet will hide 97% of the full moon from the sun's light, giving the moon a reddish hue.

According to NASA, the partial lunar eclipse will last 3 hours, 28 minutes, and 23 seconds longer than any other eclipse between 2001 and 2100.

Here's how and when to catch the rare celestial event.

Lunar eclipses aren't visible worldwide only in places where the moon is above the horizon.

For the upcoming eclipse, sky watchers in North America have the best seats in the house. People in all 50 US states, Canada, and Mexico can watch the full event.

You won't need a telescope or binoculars simply go outside and look up at the sky any time between 2:19 a.m. and 5:47 a.m Eastern Time on Friday.

Or if you don't want to head into the chilly morning air, catch a live stream of the event here.

Folks in South America and western Europe will see most of the eclipse, though the moon will set before it ends. People in western Asia and Oceania will miss the earlier part of the event, as the moon will not have risen yet. Those living in Africa and the Middle East won't see any of the spectacle.

If you miss the eclipse, don't fret.After this, NASA predicts another 179 eclipses in the next eight decades, with an average of two per year. The next eclipse will happen on May 16, 2022.

Typically, the moon's white-grey face is illuminated by sunlight reflecting off its surface. But during a lunar eclipse, the moon, sun, and Earth briefly align so that our planet blocks sunlight from reaching the moon.

A total lunar eclipse occurs when 100% of the moon is obscured by the Earth's cone-shaped shadow, known as the umbra. During a total eclipse, or near-total eclipse like this month's event, the lunar surface takes on a bloody visage.

We have oxygen and nitrogen particles in Earth's atmosphere to thank for that light show. They're better at scattering certain shorter wavelengths of light, like blue or violet, so colors with longer wavelengths like red, orange, or yellow still linger. When the moon sits in Earth's shadow, those reddish colors dominate what you see.

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How to see the November lunar eclipse, the longest this century - Business Insider

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