What are the celestial bodies that make up the solar system?

It is mainly composed of eight planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

The solar system is a collection of all celestial bodies centered on the sun and constrained by the sun's gravity. Including eight planets (from close to the sun to far away from the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune), as well as at least 173 known satellites, five confirmed dwarf planets and hundreds of millions of small bodies in the solar system.

Broadly speaking, the solar system includes the sun, four inner planets similar to the earth, an asteroid belt composed of many small rocks, four giant outer planets filled with gas and a second small celestial body area called the Kuiper Belt. At present, there are eight planets in the solar system, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Extended data:

It is believed that the formation of the solar system should be based on the nebula hypothesis, which was first put forward by Kant in 1755 and Laplace in 1796. According to this theory, the solar system was formed by the collapse of a huge molecular cloud 4.6 billion years ago. This nebula was originally several light-years in size, and several stars were born at the same time.

The study of elements dating back to ancient meteorites shows that only the heart after supernova explosion can produce these elements, so the cluster containing the sun must be near the supernova debris. It may be that the shock wave generated by the supernova explosion increased the density of the nebula near the sun, which enabled gravity to overcome the expansion pressure of the internal gas and lead to collapse, thus triggering the birth of the sun.

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