太阳系九大行星中最大的是哪一个?

2024-12-02 10:44:16
推荐回答(1个)
回答1:

木星到太阳能的平均距离是7.78亿千米,比地球远得多。

木星在椭圆轨道上绕太阳运行一周需要11.86年,与太阳平均距离是7.78亿千米。由于木星离太阳遥远,木星表面温度比地球表面低得多。根据“先驱者”11号宇宙飞船测得的温度为M150℃。

木星是太阳系九大行星中最大的一个,它的体积可以容纳1300多个地球。它的质量是地球质量的300多倍,太阳系所有其他行星的质量全加起来还不及木星质量的一半。

木星自转很快,自转一周只需9小时50分30秒,是太阳系中自转最快的一个。由于快速自转,使木星形状变扁,不是正圆形,而是中腰鼓起的椭圆形,很快的旋转速度带动它的大气层顶端的云层,竟以每小时约35400千米的速度旋转,这种高速产生的离心力就把云层拉成线丝,从而使木星赤道上空高高隆起。木星圆面上有许多带状纹,每条带状纹都与木星的赤道平行。这些带状纹是木星的大气环流。

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