First of all , let us look at the approved iau definition of a planet in our solar system 首先,让我们重温国际天文联会通过有关太阳系行星的新定义。
Without doubt , the newtonian law very appropriately reads the moving law of the solar system 毫无疑问,牛顿定律非常近似地描述了太阳系行星的运动规律。
It has the same chemical elements as have the earth and the rest of the solar system but in very different amounts - more of some , less of others 月球有如同地球和其余太阳系行星一样的化学元素,但是其比率非常不同,某些多一点,其它少一些。
It has the same chemical elements as have the earth and the rest of the solar system but in very different amounts - more of some , less of others 月球有如同地球和其余太阳系行星样的化学元素,但是其比率非常不同,某些多一点,其它少一些。
The resolution of a planet definition , the first of its kind in the astronomical history , was adopted in prague thursday after days of fierce debate and effectively kicked pluto out of the planet group in the solar system 在布拉格会议上经过多日激烈的争论,在天文学历史上第一次通过了对行星定义的决议,决定将冥王星从太阳系行星中开除。