3—Aurora Borealis "Northern Lights"
Few of us are fortunate enough to witness the spectacular displays of the Aurora Borealis. At this site you can learn what causes the lights to appear, how they get their colors, where and when are the best viewing opportunities, and you can even find aurora forecasts!

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The address (URL) of the current site is: http://www.exploratorium.edu/learning_studio/auroras/

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