The Aurora Borealis...What Causes It?

The northern lights or aurora borealis is a spectacular display of colored lights shimmering across the night sky. What causes them? (As a matter of interest the southern lights is called the aurora australis).

Via Amaze | Image credit: United States Air Force photo by Senior Airman Joshua Strang/Wikimedia


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You've got the wrong link there.

Maybe the article mentions it, but Burtt played the Imperial officer in Return of the Jedi who gets hit in the face by Han Solo and falls over a railing. He does an imitation of the famous Wilhelm Scream on his way down.
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