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Date: 09 December 2001
Copyright: Jan Curtis, Fairbanks, Alaska

The dark band in the green aurora pictured here is an example of a black aurora. A black aurora isn't an aurora at all; rather it is a lack of auroral activity. The black aurora is only visible to the naked eye if it is embedded in a region of diffuse (faint) aurora.

Photograph courtesy of Jan Curtis, Fairbanks, Alaska

Last Update: 1 September 2019
23-May-2024 23:02 UT

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