太阳系的行星表 table of planets and dwarf planets in the solar system 脱离太阳系的速度 escape velocity from solar system ..
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网站询问了一些专家对于这一争论的想法，这一争论不仅对天文学家看待太阳系的立场有所影响，也跟学校的孩子们用什么记忆术去背诵行星表大有关系。
Asked some experts to weigh in on this debate, which affects how astronomers view the solar system, as well as how complicated schoolchildren's planet-memorizing mnemonics must be.
在太阳和行星形成之前，所有元素周期表上的化学元素在太阳系的原始尘埃中四处漂浮着。
Before the formation of the sun and planets, all the chemical elements found on the periodic table were floating around in the primordial dust of the Solar System.
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