astroengine writes "Scientists using the Hubble Space Telescope have found plumes of water vapor shooting off the southern pole of Europa, an ice-covered moon of Jupiter that is believed to have an underground ocean. If confirmed — so far the plumes have only been spotted once — the finding could have implications for the moon's suitability for life and help explain why its surface appears relatively young and crater-free. "The plumes are incredibly exciting, if they are there. They're bringing up material from in the ocean, perhaps there's organic material that will be laying on the surface of the south pole. Those are the things that we want to know about," James Green, head of NASA's planetary science programs, told reporters at the American Geophysical Union conference in San Francisco on Thursday."
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