Titlebook: Unmasking Europa; The Search for Life Richard Greenberg Book 2008 The Editor(s) (if applicable) and The Author(s), under exclusive license

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A Closer Look at Tidal Effects,nce-driven eccentricity, Ganymede displayed large Callisto-like areas, but other broad regions showing tectonics and resurfacing. Closer still was the completely resurfaced Europa, and closest to Jupiter was the spewing Io.

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he most likely place to find accessible extraterrestrial lif.In .Unmasking Europa., Richard Greenberg tells the story of how he and his team of researchers came to believe that the surface of Europa is in fact a crust so thin and active that it can barely hide an ocean of liquid water below. He show

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Water World,ving with the tidal flow, or anchoring themselves (as do mussels or seaweed, for example) to be fed and flushed by the ebb and flow. Coastal marshes are fecund with tide-supported life. Creatures from land, sea, and air gather at these tidal margins to feed on the riches. Even in the Arctic, under c

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Doing Science,ked to the surface through a thin, premeable crust of ice in a variety of ways: Narrow cracks allow ocean water to flow to the surface and form double ridges. Cracks have often spread open, filling with fresh ocean water. From time to time, and place to place, local heating has thinned the ice, ofte

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Planetary Stretch,water drips onto the beach from wet seawed on cliffs 16 meters above. Yet there are no disscernible tides in the Mediterranean, and sailors crossing the oceans see no tidal effects at all. From human experience, we tend to think of tides as a local phenomenon, where twice each day the ocean rises an

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