seeder Posted December 4, 2016 #1 Share Posted December 4, 2016 Quote Could there be life in Pluto's ocean? Pluto is thought to possess a subsurface ocean, which is not so much a sign of water as it is a tremendous clue that other dwarf planets in deep space also may contain similarly exotic oceans, naturally leading to the question of life, said one co-investigator with NASA's New Horizon mission to Pluto and the Kuiper Belt. William McKinnon, professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis and a co-author on two of four new Pluto studies published Dec. 1 in Nature, argues that beneath the heart-shaped region on Pluto known as Sputnik Planitia there lies an ocean laden with ammonia. The presence of the pungent, colorless liquid helps to explain not only Pluto's orientation in space but also the persistence of the massive, ice-capped ocean that other researchers call "slushy"—but McKinnon prefers to depict as syrupy. Using computer models along with topographical and compositional data culled from the New Horizon spacecraft's July 2015 flyby of Pluto, McKinnon led a study on Sputnik Planitia's churning nitrogen ice surface that appeared this past June in Nature. He is also an author on the recently released study regarding the orientation and gravity of Pluto caused by this subsurface ocean some 600 miles wide and more than 50 miles thick. "In fact, New Horizons has detected ammonia as a compound on Pluto's big moon, Charon, and on one of Pluto's small moons. So it's almost certainly inside Pluto," McKinnon said. "What I think is down there in the ocean is rather noxious, very cold, salty and very ammonia-rich—almost a syrup. "It's no place for germs, much less fish or squid, or any life as we know it," he added. "But as with the methane seas on Titan—Saturn's main moon—it raises the question of whether some truly novel life forms could exist in these exotic, cold liquids." Read more at: http://phys.org/news/2016-12-life-pluto-ocean.html#jCp 6 Link to comment Share on other sites More sharing options...
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