Sunday, October 7, 2012

Picture of the Day: 10/7/12

Aurora over Norway. Source

This picture is of an aurora over Norway. The bright streak visible in the sky is actually what's known as a "fireball". A fireball is just like any other meteor, except it's much brighter and more spectacular. Normally, the shooting stars we see are just specks of dust burning up as they enter the Earth's atmosphere, but fireballs are much larger pebble sized rocks. 

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