Monday, March 14, 2011


An Aurora is a natural light display in the sky, particularly in the polar regions, caused by the collision of charged particles directed by the Earth's magnetic field. An aurora is usually observed at night and typically occurs in the ionosphere. It is also referred to as a polar aurora or, collectively, as Northern lights. These phenomena are commonly visible between 60 and 72 degrees north and south latitudes, which place them in a ring just within the Arctic and Antarctic polar circles.  Auroras do occur deeper inside the polar regions, but these are infrequent and often invisible to the naked eye.
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Kvaløya, Norway
Mar. 14, 2010
 Nikon D3, Nikkor 20mm f/2,8, 8 sec exposure, ISO 1000

Thomas Hagen, 
Tromsø, Norway
Mar. 15, 2010

Northern Lights dancing over the mountains in Northern Norway

Frank Olsen,
Outside Tromsø, Norway
Mar. 14, 2010
Nikon D90, Sigma 10-20, ISO 1000, 4-8 sec. exp. Eiscat:

Northern Lights dancing over the mountains and the sea in Northern Norway

Amara Eren,
Chena Hotsprings, Faibanks, AK
Mar. 3, 2009
 Nikon D3, 75 seconds, f/4, ISO 400

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