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Get ready for the Super Blue Blood Moon in January - KVOA | KVOA.com | Tucson, Arizona

Get ready for the Super Blue Blood Moon in January

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Skygazers in western Germany were treated to a rare astronomical event when a supermoon and lunar eclipse combined, showing Earth's satellite bathed in blood-red light on Sept. 28, 2015. Photo: Patrik Stollarz/AFP/Getty Images via KPNX Skygazers in western Germany were treated to a rare astronomical event when a supermoon and lunar eclipse combined, showing Earth's satellite bathed in blood-red light on Sept. 28, 2015. Photo: Patrik Stollarz/AFP/Getty Images via KPNX

PHOENIX - Keep your eye on the sky in January for a rare treat: A Super Blue Blood Moon.

According to NASA, the Full Cold Moon in December kicked off a “supermoon trilogy,” and you won’t want to miss the third installment.

But first, we get a little appetizer on New Year’s Day, when the first supermoon of 2018 appears.

Then we get the extra special supermoon on Jan. 31. NASA says that supermoon will also be a Blue Moon and occur during a total lunar eclipse.

No, that doesn’t make it a purple moon. A Blue Moon occurs when two full moons fall within the same month; the name has nothing to do with its color. A Blue Moon happens about once in 2.7 years, according to Space.com.

During a lunar eclipse, the moon moves into Earth’s shadow, so the only light reaching the moon’s surface is reflected off the Earth’s atmosphere.

The same mechanism that makes the sky blue and gives us red hues in sunrises and sunsets gives the moon its red color during a lunar eclipse — a process called Rayleigh scattering. Of visible light waves, red light waves are scattered the least by atmospheric molecules.

So as the sun’s light travels through Earth’s atmosphere toward the moon’s surface, it appears red, thus the name Blood Moon. 

But enough of the technical stuff, let’s get down to how and when you can watch this spectacular show.

In Arizona, we’ll have to get up early to see the Super Blue Blood Moon.

The moon enters totality around 5:51 a.m. and the greatest eclipse occurs at 6:30 a.m., according to the U.S. Naval Observatory Astronomical Applications Department.

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