Similar to Earth's ocrean floor, the Saturian moon Enceladus splits and spreads at the surface suggesting a vast sub-surface sea on this alien world reports the BBC from a meeting of the American Geophysical Union in San Francisco this week [6-min. video].High resolution images taken by the spacecraft Cassini [video] indicate that the surface of Enceladus is active and changing. New surface crust is created from distinctive cracks known as "tiger stripes" that are similar to the mid-ocean ridges central to the tectonic system on our own planet states a NASA press release.
Two moons of Saturn -- Enceladus and Titan -- have taken on new scientific interest resulting from the Cassini mission.
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