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火星有几个地球大
更新时间: 2020-08-17 00:00:00  

火星直径约为地球的百分之53,质量为地球的百分之11,其体积比地球要小。火星是太阳系八大行星之一,是太阳系由内往外数的第四颗行星,属于类地行星。自转轴倾角、自转周期均与地球相近,公转一周约为地球公转时间的两倍。橘红色外表是地表的赤铁矿(氧化铁)。我国古书上将火星称为“荧惑星”,西方古代(古罗马)称为“战神玛尔斯星”。

关键词: 火星 地球

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