(astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected light; Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto in order of their proximity to the sun; viewed from the constellation Hercules, all the planets rotate around the sun in a counterclockwise direction 同義詞:major planet,
any celestial body (other than comets or satellites) that revolves around a star
a person who follows or serves another 同義詞:satellite,
百科解釋
A planet () is an astronomical object] [[orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.This definition is drawn from two separate IAU declarations; a formal definition agreed by the IAU in 2006, and an informal working definition established by the IAU in 2001/2003 for objects outside of the Solar System.
詳細(xì)百科解釋
其他語種釋義
planetとは意味:planet n. 惑星. 【動詞+】 ◆Meteorites and comets continued to bombard the planet. 隕石と彗星がその惑星に衝突し続けた ◆The Uranian rings are made up largely of dark boulders that circle the planet once every eight hours. 天王星...