The solar system is composed of the sun, nine planets orbiting the sun, 34 moons of the nine planets, and a large number of comets, meteor swarms and other celestial bodies.
In 2006, the National Astronomical Federation designated the solar system as eight planets, and at the same time gave Pluto not to be called a planet, but just a dwarf planet.
Eight planets, namely Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
The eight planets of the solar system.
The eight planets are divided into two categories: Jupiter-like and terrestrial.
Classification of Jupiter-like and Earth-like planets.
1. Black "Mercury".
On March 29, 1974, the Mariner 10 space probe flew by Mercury. Six hours earlier, Mariner 10 had taken a number of images of Mercury from an altitude of about 5,380,000 kilometers.
Black Mercury. Question: Why is Mercury called "Mercury" because it is black on the surface?
Answer: Sima Qian, the author of the Western Han Dynasty's "Historical Records of Tianguanshu", found from actual observation that Chenxing was gray in color, which was associated with the Five Elements Theory, and named it Mercury after black water.
2. The "goddess" Venus
Venus was called Taibai and Star in ancient China, and its appearance in the east in the morning was called Qiming, and its appearance in the west at night was called Chang Gung.
Goddess Venus. 3. Beautiful Earth
Apollo 17 photographed Earth.
Fourth, the "God of War" Mars
The ancient Romans called Mars "Mars", the "god of war" in Roman mythology, and the ancient Babylonians also called it the "Red Planet" because of its red color.
Mars, the god of war. 5. The "largest" Jupiter
Maximum Jupiter. 6. Saturn, the "King of the Rings".
Saturn is a mysterious and massive gas planet whose main component is made up of hydrogen. It is surrounded by a dazzling ring of light, which is the ring of Saturn, which is the well-deserved king of the ring in the solar system.
Ring king Saturn. 7. The "coldest Uranus".
Uranus is the coldest planet in the atmosphere in the solar system, with a minimum temperature of 49 K (-224).
Star cold Uranus.
8. "Wind Burst" Neptune
Neptune has a strong storm, with measured winds of up to 2,400 km h.
Storm Neptune.