"One of the moons of Saturn has turned out to be another possible habitat for extraterrestrial microbes after scientists have discovered that it possesses a large ocean of water beneath its icy surface.
Measurements of gravity fluctuations around Enceladus taken by Nasa's Cassini spacecraft indicate that there is an underground ocean of melted water at the moon's south pole which may be the source of dramatic vapour plumes seen at its surface."
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