Jupiter is known as the "small solar system". Why?

The solar system is a celestial system formed with the sun as the center. In the solar system, in addition to the earth, there are seven other terrestrial planets, which are called the eight planets.

Jupiter is a strange planet in the solar system. It is the most massive planet and may even be the earliest planet formed in the solar system. Just like its name Jupiter (the gods in Roman mythology) Like the King of Jupiter), Jupiter's unshakable dominance in the solar system has had a major impact on the formation and evolution of the Jupiter galaxy, and the composition of the Jupiter galaxy. Jupiter is called a "small solar system" by scientists, and the reason why it is so called Jupiter, because Jupiter has so many satellites.

Scientists have also conducted long-term studies on Jupiter's many satellites, and found that there are differences in the physical properties and orbital characteristics of each of Jupiter's satellites.

The four largest satellites of Jupiter are the Galilean satellites. In 1610, Italian astronomer Galileo Galilei discovered Io, Europa, Ganymede and Callisto using a homemade telescope. These four satellites were later known as the Galilean satellites. The Galilean satellites are more massive than Pluto, and Ganymede is the largest satellite in the solar system, with a diameter larger than Mercury.

From the Galilean satellites outward, in order of distance are Callisto, Callisto, Callisto and Callisto. They revolve around Jupiter with a period of about 260 days. Further outward, there are Callisto, Callisto, Callisto and Callisto, which rotate in opposite directions with a period of about 700 days. Due to the large mass and volume of Jupiter, it attracts many meteors and comets. These meteors and comets, together with numerous satellites, form an unusual large family in the solar system with Jupiter as the center.

Because Jupiter itself also emits heat, Jupiter is called a "small solar system." In addition, Jupiter has a great protective effect on the earth. It can help the earth withstand the impact of many asteroids outside the solar system.