alexa Northern lights: How 'black' auroras actually work

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Northern lights: How 'black' auroras actually work

While our understanding of how the aurora's shimmering curtains of colour are formed, scientists have struggled to explain the black patches between the bright beams. Now scientists have discovered what happens at the heart of these so-called "black aurora". About 10 years ago, Tomas Karlsson started to notice something strange in the data being sent down from the ESA Cluster project's four satellites, which have been orbiting Earth since 2000, collecting data on electric and magnetic fields and particle densit.

For more details:omicsgroup.org/journals/geophysics-remote-sensing.php

 
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