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    Pluto Was Supposed to Be Fully Frozen - But It Looks Like It - Forum

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    Forum moderator: arya, dethalternate  
    Forum » Main » Science, Astronomy, Nature » Pluto Was Supposed to Be Fully Frozen - But It Looks Like It
    Pluto Was Supposed to Be Fully Frozen - But It Looks Like It
    ManuDate: Tuesday, 28-May-2019, 8:04 PM | Message # 1
    --dragon lord--
    Group: undead
    Messages: 12130
    Status: Offline
    MICHELLE STARR 20 MAY 2019

    The Solar System might be a soggier place than we previously thought - even in the glacially cold reaches of the Kuiper Belt. There, dwarf planet Pluto could be harbouring liquid oceans under a shell of nitrogen ice.

    It was thought that the temperature required to maintain a liquid ocean on Pluto was too high for the thick ice to remain unmelted, but Japanese astronomers have found a new possibility: A layer of gas under the ice and above the liquid, insulating the two from each other, and allowing them to coexist.

    This could help solve the gravity anomaly detected by the New Horizons probe in the form of the Sputnik Planitia, with its equatorial location and low topography, suggesting a liquid ocean underneath.

    A liquid ocean underneath Sputnik Planitia could also explain tectonic features on the planet. And yet, based on Pluto's age and location, scientists expected that all liquid should have frozen solid.

    "To maintain an ocean, Pluto needs to retain heat inside. On the other hand, to maintain large variations in its thickness, Pluto's ice shell needs to be cold," the researchers wrote in their paper.

    "Here we show ... that the presence of a thin layer of clathrate hydrates (gas hydrates) at the base of the ice shell can explain both the long-term survival of the ocean and the maintenance of shell thickness contrasts."

    untotenawake
    Read more/full article/source - https://www.sciencealert.com/icy-frozen-pluto-could-have-liquid-oceans
     
    Forum » Main » Science, Astronomy, Nature » Pluto Was Supposed to Be Fully Frozen - But It Looks Like It
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