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8 amazing auroras seen on Earth ... and beyond

By: Katherine Butler on July 9, 2010, 11:15 a.m.
An aurora is seen in the Arctic

Photo: LASP/University of Colorado

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The Arctic

Auroras have had many names throughout the centuries. The name comes from the Roman goddess of dawn, and the Cree call them the "Dance of the Spirits." In the Middle Ages, auroras were simply called a sign from God. NASA refers to them as “the world’s greatest light show.”