Northwest Territories Photos, Stock Photos of Canada, Yellowknife, Inuvik, Aurora Borealis, Northern Lights, Artic Circle pictures, NWT History, Pictures Canada - PhotosCanada.com Gallery

Northwest Territories Photos, Stock Photos of Canada, Yellowknife, Inuvik, Aurora Borealis, Northern Lights, Artic Circle pictures, NWT History, Pictures Canada

Aurora Borealis, Great Slave Lake, Northwest Territories, Canada 20

Aurora Borealis, Great Slave Lake, Northwest Territories, Canada 20

Description : The Northern Lights are actually the result of collisions between gaseous particles in the Earth,s atmosphere with charged particles released from the sun,s atmosphere. Variations in colour are due to the type of gas particles that are colliding. The most common auroral color, a pale yellowish-green, is produced by oxygen molecules located about 60 miles above the earth. Rare, all-red auroras are produced by high-altitude oxygen, at heights of up to 200 miles. Nitrogen produces blue or purplish-red aurora.
The connection between the Northern Lights and sunspot activity has been suspected since about 1880. Thanks to research conducted since the 1950,s, we now know that electrons and protons from the sun are blown towards the earth on the solar wind.

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