What is the nickname of the moon?

The moon, nicknamed Taiyin, Xuantu, Chanjuan and Pan Yu, is a satellite of the earth and the fifth largest satellite in the solar system. The diameter of the moon is about a quarter of that of the earth, and its mass is about one-eighty-first of that of the earth. The moon is the most massive satellite, and its surface is covered with craters formed by small celestial bodies. The average distance between the moon and the earth is about 380,000 kilometers, which is about 30 times the diameter of the earth.

Extended data:

Terrain:

There are dark parts and bright parts on the surface of the moon, the bright part is highland, and the dark part is low-lying areas such as plains or basins, which are called the moon land and the moon sea respectively. When early astronomers observed the moon, they thought that the dark area was covered by seawater, so they called it "sea". The more famous ones are the sea of clouds, the wet sea and the sea of tranquility. The bright part is the mountain range, where the mountains are stacked and criss-crossed, dotted with craters, that is, impact craters, which are a low-lying shape of annular uplift.

There are more than 33,000 impact craters with a diameter greater than 1000 meters on the moon. Bailey Crater is located near the South Pole, with a diameter of 295 kilometers, which can accommodate the whole Hainan Island. The deepest mountain is Newton crater, which is 8788 meters deep. Besides craters, there are ordinary mountains on the moon. Mountains and valleys overlap, giving you a unique perspective.

The structure on the back of the moon is quite different from that on the front. Yuehai covers a small area, but there are many impact craters. The terrain is uneven, and the longest and shortest radius of the moon are located on the back. Some places are 4 kilometers longer than the average radius of the moon, and some places are 5 kilometers shorter (such as Van der Graf depression). No "lump" was found on the back. The moon shell on the back is thicker than that on the front, with the thickest point reaching 150km, while the thickness of the moon shell on the front is only about 60km.

impact crater

The name crater was coined by Galileo. It is a remarkable feature of the lunar surface, covering almost the whole lunar surface. The largest crater is Bailey crater near the South Pole, with a diameter of 295 kilometers, which is a little larger than Hainan Island. A small crater may even be a hole of dozens of centimeters. There are about 33,000 with a diameter of not less than 65,438+000m m. It accounts for 7%- 10% of the lunar surface area.

References:

Baidu Encyclopedia-Moon