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Black aurorae

If you look closely at the northern or southern lights, you can catch the waves of their darker counterparts.
RELATED TOPICS: ATMOSPHERIC PHENOMENA | AURORAE
OMearaStephen

Seeing the northern or southern lights play against a starlit sky can be an unforgettable experience. During a geomagnetic storm, elegant curtains can sway from east to west across the sky as if blown by a breeze. Intense colors (usually green and red) may add to the view. Yet such a light show can steal your attention away from one of the most mysterious, though now explained, aspects of the aurora: the black aurora.

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