破坏性撞击对冰卫星海洋形成与寿命的影响

研究表明，巨行星（giant planet）冰卫星遭受的大型撞击对其内部地下海洋的形成影响有限。这些撞击主要改变了海洋的厚度或存在时长，而非海洋本身的存在与否。

Nature Astronomy, Published online: 20 August 2026; doi:10.1038/s41550-026-02955-x Modelling shows that large collisions with the icy moons of the giant planets do not affect drastically the occurrence of subsurface oceans inside reassembled icy moons throughout their history. They solely affect ocean thickness or longevity.