Wednesday, October 6, 2010



Aurora Over Alaska

Are those green clouds or aurora? Photographed above two weeks ago, puffy green aurora help the Moon illuminate the serene Willow Lake and the snowy Wrangell and Saint Elias Mountains in eastern Alaska, USA. Although auroras might first appear to be moonlit clouds, they only add light to the sky and do not block background stars from view. Called northern lights in the northern hemisphere, auroras are caused by collisions between charged particles from the magnetosphere and air molecules high in the Earth’s atmosphere. If viewed from space, auroras can be seen to glow in X-ray and ultraviolet light as well. Predictable auroras likely occur a few days after a powerful magnetic event has been seen on the Sun.


Credit & Copyright: Paul Aslop

6 comments:

  1. Looks pretty and toxic at the same time.

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  2. I wish I could see something like that in real life! Looks so beautiful!

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  3. wow it almost looks too beautiful to be true. I would love to see something like that one day in real life

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