What the Bailey Ring Mountain is made of

Whenever night falls, a bright moon rises into the night sky, and the clear moonlight sprinkles all over the earth, making people have countless feelings and reveries. The literati and writers are even more favored by the moon, the Tang Dynasty poet Zhang Ruoxu's "Who first sees the moon on the river, and when does the river moon shine at the beginning of the year", as well as the Song Dynasty writer Su Shi's "When is the bright moon, ask the wine to the blue sky", can be called a popular Yongyue sentence.

The moon is commonly known as the moon, also known as the sun yin. In ancient Chinese mythology, there are countless stories about the moon. In ancient Greek mythology, the goddess of the moon was named Artemis, and she was also the goddess of the hunt.

The astronomical symbol of the moon resembles a curved eyebrow and symbolizes Artemis' bow.

When the moon is in the sky, we can clearly see that there are dark parts and bright areas on it. When early astronomers looked at the Moon, they thought that the dark areas were covered with seawater, so they called them "seas". The famous ones are the sea of clouds, the wet sea, the still sea, etc.

The bright part is the mountains, which are dotted with craters. Located near Antarctica, the Bailey crater is 295 kilometers in diameter and can fit the entire island of Hainan. The deepest crater is Newton's crater, which is 8,788 kilometers deep.

In addition to craters, there are also ordinary mountains on the lunar surface. Mountains and deep valleys are stacked on top of each other, creating a unique scenery.

The age of the moon is also about 4.6 billion years, and it is closely related to the earth. The Moon also has a layered structure such as crust, mantle, and nucleus. The average thickness of the outermost lunar crust is about 60, 65 km.

Below the lunar crust to a depth of 1,000 km is the lunar mantle, which occupies most of the moon's volume. Underneath the mantle is the lunar core, which is about 1000 degrees warm and most likely molten. The Moon has a diameter of about 3476 kilometers and is 3 of the Earth's 11.

The volume is only 1 49 of the earth, the mass is about 735 billion tons, which is equivalent to 1 81 of the mass of the earth, and the gravity of the moon is almost equivalent to 1 6 of the earth's gravity.

Crater The Greek word for crater means "bowl", so it usually refers to a bowl-shaped pitted structure. The surface of the moon is covered with large and small circular craters called "moon pits", and most of them are surrounded by craters that rise above the lunar surface. The largest crater on the lunar surface is the Bailey crater near the moon's south pole, with a diameter of 295 kilometers.

Small moon craters are only a few tens of centimeters in diameter or even smaller. The total number of moon craters with a diameter greater than 1,000 meters is more than 33,000. The largest of them has a diameter of more than 100 kilometers and occupies 7-10% of the lunar surface.

The crater on the far side of the MoonMore The name crater was given by Galileo, and it is a distinctive feature of the lunar surface, covering almost the entire lunar surface. The crater is the most significant geomorphological feature on the lunar surface. The moon's dotted craters resemble volcanic craters on Earth, with a round flat land surrounded by a ring of raised mountains, with steep inner walls and gentle outer slopes.

There is a deep crater in the middle of the crater, surrounded by towering rocks, and the height of the crater is generally between 7 and 8 km. The size of the craters varies greatly, the small craters are less than 10 kilometers in diameter, and some are only the size of a football field; The large crater is more than 100 kilometers in diameter. The largest crater is the Bailey crater near the south pole of the moon, with a diameter of 295 kilometers, a little smaller than China's Zhejiang Province, which can fit the entire Hainan Island into it.

On the lunar surface, there are more than 33,000 craters with a diameter of more than 1 km, accounting for 10 of the moon's surface area; As for the smaller, veritable moon pits, there are countless of them. The shape of the crater is also different, there is a small crater in the large crater, and some large crater** has a deep crater, such as Newton's crater, the central crater is 8788 kilometers deep, which is the deepest crater; There is also a large crater ** that suddenly rises a peak, called "** peak". The Archimedes crater, the Ottorik crater and the Aliskir crater are the three largest craters in the "sea of rain", and the diameter of the Archimedes crater is 80 kilometers.

At 295 kilometers in diameter, Baily (1774-1844), near the Moon's south pole, is the largest crater on the Moon.