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Space Auroral Corona Over Norway

Discussion in 'Tech, Science, and Space' started by Robby, Feb 1, 2009.

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  1. Robby

    Robby The Robot

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    NASA Astronomy Picture Of The Day
    Auroral Corona Over Norway


    [​IMG]


    Auroral Corona Over Norway
    Credit & Copyright: Frank Andreassen (nettfoto.no)

    Explanation: Higher than highest communications tower, higher than highest mountain, higher than highest airplane, lies the realm of the aurora. Auroras rarely reach below 60 kilometers, and can range up to 1000 kilometers. Aurora light results from energetic electrons and protons striking molecules in the Earth's atmosphere. Frequently, when viewed from space, a complete aurora will appear as a circle around one of the Earth's magnetic poles. This particularly rare purple auroral corona occurred in 2004 high above Harstad, Norway.



    (Via NASA)
     

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