Glowing auroras ring Saturn

New movie documents lights over nearly two days on the planet

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SOUTHERN LIGHTS This false-color view of Saturn, a composite of 65 six-minute observations recorded by the Cassini spacecraft in 2008, shows the ringed planet’s southern aurora (green). U. of Leicester, U. of Arizona, JPL/NASA

More than a billion kilometers from Earth, ghostly auroras shimmer at the poles of Saturn.