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• Aurora (phenomenon) - MSN Encarta

  Aurora phenomenon, luminous atmospheric phenomenon occurring most frequently above 60° North or South latitude, but also in other parts of the...

• Aurora (astronomy) - Wikipedia, the free encyclopedia

  Auroras (North/South Polar Lights; or aurorae, sing.: aurora) are natural colored light displays in the sky, usually observed at night, particularly in the polar zone.

• Aurora (phenomenon) - Hutchinson encyclopedia article about Aurora ...

  aurora. Coloured light in the night sky near the Earth's magnetic poles, called aurora borealis (‘northern lights’) in the northern hemisphere and aurora australis (‘southern ...