Total lunar eclipse: 'Blood moon' phenomenon dazzles skywatchers

The total lunar eclipse was one of the longest totalities of the decade

A total lunar eclipse, where the moon appears to have a red tint, commonly referred to as a "blood moon," was visible for the first time in a year Sunday night into Monday morning. 

The phenomenon is made possible when sunlight is filtered through the Earth’s atmosphere, giving the illusion that the moon glows red. 

NEW JERSEY, USA - MAY 15: The phases of the total lunar eclipse over Avon Beach. ((Photo by Joshua Comins/Fox News))

The spectacle lasted about 90 minutes. It was one of the longest totalities of the decade. Observers in the eastern half of North America and all of Central and South America had prime seats for the show. It was also visible in Africa, Europe and the Middle East. Alaska, Asia and Australia were unable to view the phenomenon.

NEW YORK, USA - MAY 15: The moon in eclipse on Sunday night from New York City, United States on May 15, 2022. (Photo by Tayfun Coskun/Anadolu Agency via Getty Images)

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The blood moon is seen during a total lunar eclipse in Santiago, on May 15, 2022. (Photo by MARTIN BERNETTI / AFP) (Photo by MARTIN BERNETTI/AFP via Getty Images)

"This is really an eclipse for the Americas," NASA's Noah Petro, a planetary geologist who specializes in the moon, told the Associated Press. "It's going to be a treat."

The blood moon is seen during a total lunar eclipse in Buenos Aires, on May 16, 2022. (Photo by Luis ROBAYO / AFP) (Photo by LUIS ROBAYO/AFP via Getty Images)

Before the process begins, the Moon appears its normal color but soon enters its penumbra and umbra stages of the process — where it adopts a pinkish hue — before it turns a definitive red.

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"This is this gradual, slow, wonderful event that as long as it’s clear where you are, you get to see it," Petro added.

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Eager viewers in France, Argentina, and New York could all see the magical process unfold and later uploaded videos and photos of the "blood moon" to social media. 

The Associated Press contributed to this report.

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