Why does the Moon always face the Earth with a fixed side

Because the Moon is pulled by the Earth's gravitational pull for a long time, its rotation period and orbital period are strictly equal, so the Moon faces the Earth on only one side. This is also common in the moons of other large planets in the solar system.

Because the Moon is a spaceship and its backside is its base, its backside can never face the Earth. Its orbit is carefully designed, and the autobiographical speed is equal to the revolution.

Because his rotation period is the same as the revolution (very close) to the earth's rotation cycle, which is about a month, he always faces the earth in a fixed position.

The rotation speed is the same as the revolution speed, so only one side of the moon can be seen.

Voyagerii is correct. The rotation of the Moon is comparable to its revolution.

You can do an experiment with a small model and see what the rotation looks like when it is equal to the revolution, or you can make an equation and see what the solution looks like.

The rotation period and the revolution period are equal.

It is no coincidence that the fixed side of the moon is always facing the earth, but due to the rotation of the moon and the synchronization of the rotation of the earth, the rotation period of the moon is days, and the rotation period of the earth is also days, so if you look at the moon on the earth, you will always only see one side of the moon.

As the only satellite of the earth, the moon has been a symbol of beauty since ancient times, has been carrying the dream of mankind, there are beautiful records about the moon in ancient times, in ancient China, the moon is imagined to be the place where there is a heavenly palace above, and there are even a lot of mythical stories about the moon, there are jade rabbits who keep pounding medicine, Wu Gang who cut laurel trees, and there is a fairy Chang'e, and the moon is a fairyland in the mouths of many poets, but with the development of modern science and technology, human beings can rely on their own strength to land on the moon, People found that there was no Guanghan Palace on the moon, and there were no dancing fairies, some were just dead silence, and people were surprised to find that the moon was always fixed on the side facing the earth, that is to say, no matter how advanced the means of observation on the earth, it was impossible to see the far side of the moon.

What is on the far side of the moon, the more unknown it is, the easier it is to cause people's fear, many science fiction ** or film directors have created a lot of works about the far side of the moon, some think that there are alien bases on the far side of the moon, and some even think that the back side of the moon hides the German army of World War II, but these rumors have been self-defeating with the entry of humans into the far side of the moon.

The reason why the moon is always facing the earth is because of a special natural phenomenon, that is, the moon is tidally locked by the earth, this phenomenon can also be called synchronous rotation, the tidally locked celestial body rotates for the same time as its companion celestial body orbits for one time, so only one side of the moon will always be seen on the earth.

This is not a coincidence, but an inertia and natural law formed in the replacement and continuous development of the universe, so as to ensure that the moon and the earth coexist and will not be affected by each other, but according to the current trend of scientific and technological development, this phenomenon can not be fully revealed.

In fact, this is not too much of a coincidence, but they form a line of the Earth, the Moon, the Solar System, and they are all in a straight line, and they are all floating in the air.

I don't think it's a coincidence, this phenomenon has a technical term called tidal locking, which refers to the way in which a celestial body orbits another celestial body and gradually locks in with the long-term profit of the other celestial body, facing the other celestial body on one side.