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Blaine McCartney
"2015 Favorites"     [index] <<- Previous
2015 Favorites The Aurora Borealis, also known as the Northern Lights, begin to flare up with green, yellow and pink hues near the Vedauwoo Recreation Area late Monday night between Cheyenne and Laramie. The Northern Lights are created as a result of collisions between gaseous particles in the Earth's atmosphere and charged particles released by the sun, according to the Northern Lights Space and Science Centre in Canada. Variations in color are due to the type of gas particles that are colliding. The most common 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.