Aurora on Saturn

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These spectacular light shows are caused by an energetic solar wind that sweeps over the planet, much like it does on Earth. However, unlike on Earth, Saturn's auroras can be seen only in ultraviolet light, and therefore are visible only from space using instruments sensitive to ultraviolet radiation. The images reveal ripples and overall patterns that evolve slowly, appearing generally fixed in our view and independent of planet rotation.


ESA/Hubble (M. Kornmesser & L. Calçada)