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By - Kevin Trinh et al, June 2023
Summary - This study implies that there may be limited hydrothermal activity and seafloor volcanism at Europa. It plausibly ended accretion, as a mixture containing water-ice and/or hydrated silicates. Here, we use numerical models to describe the thermal evolution of Europa’s interior assuming low initial temperatures (-73 C to 27 C). We find that silicate dehydration can produce Europa’s current ocean and icy shell. Rocks below the seafloor may remain cool and hydrated today. Europa’s metallic core, if it exists, may have formed billions of years after accretion. Ultimately, we expect the chemistry of Europa’s ocean to reflect protracted heating of the interior.
News - Phys.org
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