Spectacular Aurora From Massive Filament Eruption

Swirls of green and red appear in an aurora over Whitehorse, Yukon on the night of September 3, 2012. The aurora was due to the interaction of a coronal mass ejection (CME) from the sun with Earth's magnetosphere. The CME left the sun on August 31 and arrived on September 3. Image Courtesy of David Cartier, Sr.

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