Cluster quartet probes the secrets of the black aurora
ESA Science news - media version
Plain text version of the ESA Science news report - embargoed until 20:00 CET 10 December 2001.
Images for this story
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A black aurora (the dark band) is visible against the diffuse aurora in this photograph. (Photograph copyright Jan Curtis, Fairbanks, Alaska) Original image available at The Aurora Page - Photographs by Jan Curtis | |
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The four Cluster spacecraft showed that black aurora are a kind of 'anti-aurora' Large (jpg) (444 kb) | |
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Three of the four Cluster spacecraft found indications for some changes in the magnetosphere above the aurora Large (jpg) (444 kb) | |
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Shimmering curtains of red and green illuminate the long winter nights near the Arctic Circle. (Photograph courtesy of Till Credner, AlltheSky.com) Large (jpg) (258 kb) |
NASA press release
Cluster Tunes Into Earth's Frequency, Pinpoints Location of Auroral Radio Emissions.
Cluster's instruments
More on Cluster's instruments.