A Floral Aurora Corona

Bild Note: 4 (2 Votes)

⏴ previous	Bild Upload von 18.02.2016 21:43	next ⏵
zorg.ch #110276 by [z]Barbara Harris @ 29.07.2009 00:00 - nach oben - A Floral Aurora Corona 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. digg_url = 'http://apod.nasa.gov/apod/ap090728.html'; digg_skin = 'compact'; Note: An APOD editor will review great space images this Saturday night at Ft. Wilkins, Michigan. Credit & Copyright zorg.ch #110284 by Squeezer @ 03.08.2009 22:16 - nach oben - Mini Winamp visualization