The Solar SystemThe solar system was a star system in the Milky Way, with a diameter of about 15 trillion kilometers. Its mass was mainly concentrated in the range of 4.5 billion kilometers, which was the range of motion of the sun and planets. At the center was a hot star, the Sun. Its mass was about 99.86% of the total mass of the solar system. Under the effect of gravity, other materials in the solar system were gathered together.
The solar system included planets and their satellites, dwarf planets and their satellites, asteroids and their satellites, comets, meteorites, and interstellar materials. There were a total of eight planets, which were Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune in descending order from the sun. The asteroid belt was usually used as a boundary to divide the inner solar system and the outer solar system. The region beyond Neptune in the outer solar system was called the Trans-Neptune region, which included the Kuiper Belt and the Oort Cloud. The celestial bodies in this region were called Trans-Neptune objects. The area affected by the solar wind was like a sphere, called the heliosphere. Its radius was more than 100 astronomical units, and beyond the heliosphere was interstellar space.
" The Legend of the Three Dragon Scales in the Milky Way Continent " is equally exciting. Everyone is welcome to click and read it!
it's a great book but the author (or maybe translator) seems to be too stupid to tell the difference between a solar system and a galaxy. a solar system is not a galaxy. idiot.