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Published online 26 November 2008 | Nature | doi:10.1038/news.2008.1254

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Enceladus shoots supersonic jets of water

Saturn's icy moon spouts water vapour from its cracks.

Four supersonic jets of water vapour have been detected within the enormous geyser of gas and dust that spurts from the south polar region of Saturn's icy moon Enceladus.

The observations, made by NASA's Cassini orbiter, add weight to the idea that liquid from a lake not too far beneath the satellite's surface is erupting through warm cracks to form the giant plume.

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