Gas plumes on Enceladus, illustration

Gas plumes on Enceladus, illustration

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Credit: NASA/JPL-Caltech/SCIENCE PHOTO LIBRARY

Caption: Gas plumes on Enceladus. Cutaway computer illustration of plumes of water vapour and other gases escaping at high velocity from the surface of Saturn's moon Enceladus. The theory of a 'shear heating' mechanism suggests that tidal forces acting on fault lines in the moon's icy shell cause the sides of the faults to rub back and forth against each other, producing enough heat to transform some of the ice into plumes of water vapour and ice crystals. Cold sub-surface ice (blue) becomes much warmer near the active fractures from which the plumes emanate.

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Keywords: artwork, astrogeological, astrogeology, astronomical, astronomy, astrophysical, astrophysics, black background, cold, cut out, cut outs, cut-out, cut-outs, cutaway, cutout, cutouts, enceladus, fault line, fracture, fractures, friction, frozen, gas, gases, geological, geology, heated, hot, hydrothermal activity, ice, icey, illustration, lines, moon, no-one, nobody, physical, physical geography, physics, planetary science, plume, plumes, saturn, saturn'ss moons, saturnian, shear heating, sub-surface, surface, vapor, water vapour

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