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更新日期：2017-04-28
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目前版本：1.0
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The planet (from the ancient Greek απ πλανςης (astēr planētēs), meaning "wandering star") is an astronomical object that orbits a star or a star remnant large enough to have its own gravity, not too large to create thermonuclear fusion, and has " The area around its orbit of planetesimal planets.
The word planet has long existed and has historical, scientific, mythological, and religious connections. By ancient civilizations, the planet was seen as something eternal or a divine representative. As science progresses, the human view of the planet changes.
