Geysers of liquid water squirt into space from cracks in the ice near the south pole of Enceladus, one of the moons of Saturn, in this recent image from the Cassini spacecraft. They form bright streaks from the bottom of the moon, which is hovering above the bright limb of Saturn. Some scientists think the geysers are powered by a "Perrier" ocean of fizzy bubbles. [NASA/JPL/SSI]
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