Jupiter has the largest volume and mass among the nine planets in the solar system. It has an extremely huge mass, more than 2.5 times that of the other eight planets combined, 318 times that of the Earth, and its volume is that of the Earth. 1300 times. In order of distance from the sun, Jupiter ranks fifth. At the same time, Jupiter is also the fastest rotating planet in the solar system, so Jupiter is not a perfect sphere, but slightly flattened at the poles and slightly bulging at the equator. Jupiter is the fourth brightest star in the sky, after the sun, moon and Venus (sometimes, Jupiter is slightly dimmer than Mars, but sometimes it is brighter than Venus). Jupiter is mainly composed of hydrogen and helium, and its core temperature is estimated to be as high as 30,500°C.
Saturn is a giant gas planet, the second largest planet in the solar system after Jupiter. The English name of Saturn (and the names of Saturn in most other European languages) is named after the Roman god of agriculture, Saturn. In ancient China, it was called Zhenxing or Star-filling.