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Does Europa's Ice Hide an Ocean?

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Science  20 Dec 1996:
Vol. 274, Issue 5295, pp. 2015
DOI: 10.1126/science.274.5295.2015


An image sent down late last week from the Galileo spacecraft orbiting Jupiter offers the sharpest view yet of the Jovian moon Europa, adding new hints that there may be a water ocean sealed beneath the moon's icy surface—which raises the possibility, however faint, of life on this distant world.