木星是太阳系中当之无愧的最大行星——它的内部可以装下1300多个地球。科学家们称木星为“巨型气体行星”是因为它绝大部分的组成物质是氢气。木星高速的自转使其表面的氢气层甩到空中成为始终盘旋着的云带——这颗行星完全旋转一周只需要10个小时。在云层之下并没有固态的地面,气体全部并入一个由液态氢组成的巨大而灼热的海洋中。在更深处,氢元素的形态则类似液态金属。科学家们认为这颗行星的核体是由比太阳表面还灼热6倍的熔化着的岩石所构成的。 Jupiter is the deserved largest planet in the solar system - its interior can hold more than 1300 Earth. Scientists call Jupiter the “giant gas planet” because most of its constituents are hydrogen. Jupiter’s rotation at high speed throws the surface layer of hydrogen into the air as a cloud band that is always hovering - it takes only 10 hours for the planet to fully rotate one week. Under the clouds there is no solid ground, and all the gas is incorporated into a huge, hot sea of ​​liquid hydrogen. At a deeper level, hydrogen forms like a liquid metal. Scientists think the planet’s nuclei are made of melted rocks six times hotter than the sun’s surface.