Space in Images - 2001 - 12 - Cluster probes the mysteries of the black aurora

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Cluster probes the mysteries of the black aurora

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Title Cluster probes the mysteries of the black aurora

Released 06/03/2002 11:31 am

Copyright Photograph courtesy of Jan Curtis, Fairbanks, Alaska

Description
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.

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Activity Space Science

Mission Cluster

Keywords Space environment

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