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A 'Dragon Aurora' Appeared in the Sky Over Iceland, and NASA Is a Little Confused

By Brandon Specktor February 22, 2019

     

Holy smokes! An aurora that resembles a dragon recently loomed in the skies over Iceland, and NASA scientists aren't exactly sure why it showed up when it did.

(Image: © Jingyi Zhang & Wang Zheng)

A gargantuan green dragon hisses in the sky over Iceland. Either "Game of Thrones" really upped its production budget for its final season, or the sun belched a barrage of charged particles into our atmosphere again.

As much as any of us would like to see a real dragon breathe flames into the winter sky, buzzkill NASA blames solar activity — as usual — for the writhing, "fire-breathing"- aurora that loomed over Iceland earlier this month.

Auroras like this occur when some of the sun's many magnetic field lines twist together and burst, creating sunspots. Charged particles gush out of these spots and soar on the solar wind deep into space. If Earth happens to be in the way of such a stellar energy storm, the particles crash into our planet's own magnetic field and careen through our atmosphere toward the poles. Along the way, those particles interact with molecules of oxygen, nitrogen and other elements in our atmosphere to create the dazzling light show we call the aurora. [Spaced Out! 101 Astronomy Photos That Will Blow Your Mind]

While auroras themselves are not an unusual sight, NASA noted that this Icelandic dragon (which also resembles evil queen Maleficent's dragon incarnation from Disney's "Sleeping Beauty") appeared at an unexpected time. "No sunspots have appeared on the Sun so far in February, making the multiple days of picturesque auroral activity this month somewhat surprising," the editors of NASA's astronomy picture of the day blog wrote on Feb. 18.

πηγη

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NASA says giant green DRAGON in sky over Iceland came from a hole in the Sun

The spectacular sight was caused by charged particles from the Sun striking the Earth's atmosphere

By

Sophie CurtisTechnology and Science Editor

• 13:44, 26 FEB 2019
• UPDATED14:01, 26 FEB 2019

A huge green dragon that appeared in the sky over Iceland earlier this month came from a hole in the Sun, NASA has claimed.

The incredible dragon-shaped aurora was captured by photographers Jingyi Zhang and Wang Zheng, and selected as NASA's astronomy picture of the day on February 18.

The celestial display was so enthralling that the photographer's mother ran out to see it. She can be seen in the foreground of the picture, staring up at the sky in wonder.

(Image: Jingyi Zhang & Wang Zheng/NASA)

NASA explains that the dragon aurora was caused by a hole in the Sun's corona that expelled charged particles into a solar wind.

This solar wind drifted away from the Sun through space, and was buffeted around the solar system by the magnetic fields of various planets, until it reached the Earth's magnetsopehere.

When some of the charged particles from the Sun struck the Earth's atmosphere, they excited atoms which subsequently emitted light, known as aurora.

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NASA FILMS SOLAR STORM ACTIVITY IN HIGH DEFINITION

"Imagine you have a bottle of fizzy drink, and you give it a good shake. This puts lots of energy into the bottle, and when you open it, this energy will be released in a big stream of fizzy bubbles," said Paul O'Mahoney from the University of Dundee in an article for The Conversation .

"In the same way, the protons and electrons from the Sun 'shake up' the particles in the atmosphere. Then, the particles let out all that energy in the form of light (instead of bubbles)."

While auroras themselves are not an unusual sight, NASA noted that this Icelandic "dragon" appeared at an unexpected time.

"No sunspots have appeared on the Sun so far in February, making the multiple days of picturesque auroral activity this month somewhat surprising," it said.

However, it was reported earlier this month that a "canyon-shaped hole" had opened up in the Sun's upper atmosphere, and that this was expected to cause auroras on Earth.

"Arctic sky watchers can expect minor geomagnetic storms and auroras mixed with bright moonlight when the fast-moving stream arrives," reported Space Weather .

πηγη

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Nasa reveals giant green DRAGON in Iceland's sky that came from hole in Sun's corona (thesun.co.uk)

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Uncanny 'aurora' of fire-breathing dragon lights up the sky in latest Northern Lights spectacle | Daily Mail Online