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Space A Floral Aurora Corona

Discussion in 'Tech, Science, and Space' started by Robby, Jul 28, 2009.

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  1. Robby

    Robby The Robot

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    NASA Astronomy Picture Of The Day
    A Floral Aurora Corona


    [​IMG]


    A Floral Aurora Corona
    Credit & Copyright: Zoltan Kenwell (Infocus Imagery)

    Explanation: Few auroras show this level of detail. Above, a standard digital camera captured a particularly active and colorful auroral corona that occurred last week above Alberta, Canada. With a shape reminiscent of a flower, the spectacular aurora had an unusually high degree of detail. The vivid green and purple auroral colors are caused by high atmospheric oxygen and hydrogen reacting to a burst of incoming electrons. Many photogenic auroras have been triggered from a solar wind stream that recently passed the Earth. The auroras were unexpected because the initiating Sun has been unusually quiet of late.


    Note: An APOD editor will review great space images this Saturday night at Ft. Wilkins, Michigan.

    (Via NASA)
     

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