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Category: 自然科學

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火星（英語：Mars；天文符號：♂），古名熒惑，是離太陽第四近的行星，也是太阳系中仅次于水星的第二小的行星，为太陽系里四顆類地行星之一。由于火星地表廣泛的分佈著氧化鐵，其主要呈現為橘紅色，因此亦被称...