A rare lunar event is happening this weekend that’s not to be missed. And if you do, you won’t have another chance to see these elements come together until 2033. A total “supermoon” lunar eclipse – also called a blood moon – will take place on Sunday, September 27, and will be visible for most of the world to see.

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It’s hard to miss a supermoon. The technical term is lunar perigee: when the moon is closest to the Earth in its orbit and appears huge to the naked eye. Along with the perigee, a full moon combined with a lunar eclipse will create a rare triad that can only be observed a few times each century.

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Why is this phenomenon sometimes called a blood moon? The eerie, fiery hue of the blood moon comes from light refracting off the edge of the Earth’s atmosphere. This weekend, the moon will enter the dark part of Earth’s shadow around 9:07 pm EDT, entering a total eclipse at 10:11 pm and beginning to reemerge from the shadow 12 minutes later.

There will be several organizations performing live webcasts of the event, including the Slooh Community Observatory. Los Angeles’ Griffith Observatory is holding a public viewing event, where it will provide onlookers with binoculars and telescopes to witness the event. The University of Arizona’s SkyCenter will be broadcasting live telescope footage on its site, as well.

Don’t miss Mother Nature’s show this weekend – you won’t be invited for another viewing for many years.

Via Discovery News

Images via Shutterstock (1,2)