What is the definition of Mercury?Mercury is one of the eight planets in the solar system and the closest planet to the Sun. It is a rocky planet that is slightly larger in size and mass than the Moon. Due to its proximity to the Sun, Mercury's surface temperature is extremely high and can reach 427.
Discover the history of Mercury.
The human exploration of Mercury began in the early 20th century. In 1915, when the American astronomer Fromm analyzed the orbit of Mercury, he proposed the "Mercury Dynamic Path", believing that it was due to the gravitational pull of a large number of unknown objects on the surface of Mercury. Subsequently, American astronomers Barton and Addon confirmed this hypothesis through telescope observations and named it "Mercury's internal object". In 1965, the American "Marna 9" probe flew by Mercury for the first time and sent back some ** and data. In 1974, the Marna 10 probe of the United States detected Mercury again and sent back more data.
Mercury's atmospheric composition and surface landforms.
Mercury's atmosphere is very thin and consists mainly of oxygen, sodium, hydrogen, helium, and cations near the equator. Mercury's surface is complex, including highlands, plains, canyons, and craters. There are also some faults on Mercury's surface that are hundreds of kilometers long, which are caused by the cooling contraction of Mercury's interior.
Other properties of Mercury.
In addition to the composition of the atmosphere and the surface landforms, Mercury has some other properties:
Rotation period: Mercury's rotation period is 88 days, which is equal to its orbital period, which means that one "day" and one "night" each lasts 88 days.
Magnetic field: Mercury's magnetic field is very weak, only about 1% of that of Earth, but it has a great influence on the solar wind.
Density: Mercury has a very high density, close to Earth. This suggests that there may be a large number of metal and silicate minerals present inside Mercury.
Rocky planet: Due to its high density, Mercury is considered a rocky planet, similar to Venus, Earth, and Mars.
Overall, Mercury is a unique and mysterious planet, although it is very close to the Sun, its surface temperature is extremely high, the atmosphere is thin, the surface is complex, and there are many unknown mysteries waiting for mankind to explore. As technology continues to advance, I believe we will have a deeper understanding of Mercury.