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冰卫星

冰卫星是表面与组成以为主的天然卫星。一颗冰卫星的表面下可能拥有海洋,并可能含硅酸盐或金属岩的岩石核心。它被认为可能是由冰II或其它多形体的水冰[1]。此类天体的典型例子就是欧罗巴

冰卫星会因为潮汐而变得温暖,最常见的类型就是有液态水[来源请求],因此这种类型的天体最有可能拥有-基外星生物[可疑]

一些冰卫星展示出冰火山的喷泉,类似间歇泉。最适合研究的就是土星的卫星恩克拉多斯

轨道

所有已知的冰卫星都属于气态巨行星,其轨道都在太阳系的冻结线之外。额外的条件是卫星没有在内部的原始卫星盘内形成,因为那儿温暖的温度不适合冰的凝结。

欧罗巴的质量被认为含有8%的冰和水,其余的是岩石[2]。木星外侧的两颗伽利略卫星佳利美德卡利斯多,因为从原始的热木星形成,包含更多的冰。

土星的卫星泰坦,外观和行为都比太阳系的任何其他天体都更像地球[3]。已知泰坦的表面上有稳定的液体池[3]

影像

参考资料

  1. ^ Chaplin, Martin. Ice-two structure. Water Structure and Science. 2007-10-26 [2008-01-02]. (原始内容存档于2012-03-27). 
  2. ^ Canup, Robin M.; Ward, William R. Origin of Europa and the Galilean Satellites. 2008. arXiv:0812.4995可免费查阅. 
  3. ^ 3.0 3.1 Rosaly Lopes and Robert M. Nelson. Surface features on Titan form like Earth’s, but with a frigid twist. IAU. 2009-08-06 [2009-12-21]. (原始内容存档于2009-09-26). 
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冰卫星
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