![](http://www.alamy.com/thumbs/6/6B78517F-789C-4495-9AD6-76A192A3B48F/D5DYCJ.jpg)
Earth Aurora (Auroral X-ray emission observed from Earth's north polar region.)
Size: 1632px × 1225px
Photo credit: © NG Images / Alamy / Afripics
License: Licensed
Model Released: No
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