体型最大木星是太阳系最巨大的行星,赤道半径达到了71492公里,是地球的11.2倍,体积是地球的1318倍。它的质量也是太阳系最大的,虽然太阳系第二大行星——土星的尺寸和木星差不多,但是密度非常小。在太阳系内,除了太阳和木星之外的其他所有天体加在一起,质量也只有木星的40%左右。
过去有些人猜测,在木星附近有一个尘埃层或环,但一直未能证实。光环分为内环和外环,外环较亮,内环较暗,几乎与木星大气层相接。光环的光谱型为G型,光环也环绕着木星公转,7小时转一圈。木星光环是由许多黑色碎石块构成的,石块直径在数十米到数百米之间。
原文:“Consider again that dot. That's here, that's home, that's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. ”“It has been said that astronomy is a humbling and character-building experience. There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another, and to preserve and cherish the pale blue dot, the only home we've ever known.”对其他段落感兴趣的读者可以进入以下链接:见原文链接。
·欧洲木星探测器2023年4月发射,2031年7月抵达木星,将解开五大谜团,探讨两个核心主题:太阳系是如何工作的?行星形成和生命出现的条件是什么?JUICE的核心目标之一是确定木星的卫星是否是可能的生命栖息地。哈勃望远镜2021年对木星的观测。
NASA / ESA / CSA / B. Holler / J. Stansberry。Webb Images of Jupiter and More Now Available In Commissioning Data。