Astronomy Picture of the Day
    


Creature Aurora Over Norway
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Creature Aurora Over Norway
Credit & Copyright: Ole C. Salomonsen (Arctic Light Photo)
Explanation: It was Halloween and the sky looked like a creature. Exactly which creature, the astrophotographer was unsure (but possibly you can suggest one). Exactly what caused the eerie apparition was sure: one of the best auroral displays in recent memory. This spectacular aurora had an unusually high degree of detail. Pictured above, the vivid green and purple auroral colors are caused by high atmospheric oxygen and hydrogen reacting to a burst of incoming electrons. Birch trees in Troms▄, Norway formed an also eerie foreground. Many other photogenic auroras have been triggered by recent energetic flares on the Sun.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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Based on Astronomy Picture Of the Day

Publications with keywords: aurora - corona - Norway
Publications with words: aurora - corona - Norway
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