What is the primary cause of the aurorae (Northern and Southern Lights)?

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     drift of pollutants to the poles
      diffraction in the atmosphere
      reflections from polar ice
      charged particles interacting with the atmosphere
      cold air trapped over poles
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

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charged particles interacting with the atmosphere
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)

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