Postcard08: Saturn's Aurora
Astronomers combined ultraviolet images of Saturn's southern polar region with visible-light images of the planet and its rings to make this picture of its aurora. The auroral display appears blue because of the glow of ultraviolet light. Read more about the image here.
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Text and compilation: Monica Salomone & Lars Lindberg Christensen. Graphics & Layout: Martin Kornmesser. Editor: Bruce Battrick. Coordination: Lars Lindberg Christensen.