※ 引述《Gwaewluin.bbs@ptt.cc (神無月 孝臣)》之銘言:
: 稍微整理了一下
: 草案:
: =============================================================================
: 5A
: The IAU therefore resolves that planets and other bodies in our Solar System
: be defined into three distinct categories in the following way:
: (1) A planet is a celestial body that (a) is in orbit around the Sun, (b)
: has sufficient mass for its self-gravity to overcome rigid body forces so
: that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has
: cleared the neighbourhood around its orbit.
: 行星:
: (a)要繞著太陽旋轉
: (b)要有足夠的質量使自身的重力可和剛體的力維持流體靜力平衡(也就是要接近圓形)
: (c)有能力能清除其軌道附近其他物體的天體
has cleared ??
有點疑惑, 是說 1. 將附近星體直接吸納近行星本體 或 捕獲當成其衛星, 應該是這
兩重意義吧?!而且還是用完成式的, 表示是要已經清掉了才算?!
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08/26 03:01, , 1F
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