suppose one planet is out of plan
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送交者: blobfish 于 2010-08-27, 05:10:57:
回答: 太阳系内各行星的轨道在一个很接近的同一平面上吗？ 由 BigMac 于 2010-08-27, 00:15:34:
suppose one planet is out of plan, it will experice a force of grativity by the sun and other planets. This force is norm and toward to the plan
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