When did the Moon, an important planet that makes up the Earth Moon System , begin to appear?

In China, the record of the appearance of the month is at the time of Emperor Jun, and before Emperor Jun, there is no record of the month. There is an ancient legend of the Yao people in China, which says that the moon suddenly appeared at a certain time in human beings, not always in the sky. The history of mankind is only a few hundred thousand years, and the history of human memory is even shorter, only tens of thousands of years.

It began to appear in the Cambrian era and gradually combined to form the Earth-Moon system.

The Moon may have formed about 50-7.5 billion years ago. There are several theories about its origin, the most common being that it was formed from a massive collision between Earth and a Mars-sized celestial body.

Because when did the moon that began to become the Earth be the Moon? Having said that, my personal opinion is that when the Moon becomes a satellite of the Earth, the scientific community has not yet finalized it, but it will have to form a relatively magnetic coil orbit from the Earth's stable magnetic field before the Moon will gradually form, which can be scientifically speculated at this time, but it is not accurate.

Why do you say that? Because: the formation of the earth is about 4.3 billion years ago, on the basis of determining the formation of the earth, the early earth has had a sustainable life birth and evolution of the survival phenomenon as a criterion, the earth 4.3 billion years ago, the volume is not large, the diameter is about 1000 kilometers, over time, continue to absorb matter and space orbit, the size of the earth and the mass of the wheel will gradually increase, bigger and bigger, and gradually form its own huge magnetic field.

With the expansion of the mass and volume of the earth, the magnetic field of the earth involving the space range continues to expand, the existence of the magnetic field is bound to produce the phenomenon of magnetic coils, the stability of the earth's magnetic field will form a relative magnetic coil, which can make the moon gradually form an orbit consistent with the natural orbit, and can gradually gather in the same orbit has been running in various space materials, and gradually realize the accumulation of space body mass, and over time, will eventually form the current earth satellite moon.

The scientific community does not have a specific time for the formation of the moon, but the diameter of the globular star must be more than 800 kilometers, less than 800 kilometers in diameter or less, are irregular boulder phenomena, larger than 800 kilometers or more in diameter, can form a circular state, can be called a ball. In this case, the Moon can be called the Moon only when its diameter increases to about 800 km. It is estimated that the formation of the Moon was about 800010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

The date of the formation of the Moon is the result of scientific speculation, but it is not absolutely certain.

The Earth was born 4.6 billion years ago, and the Moon Burning Bucket Ball is the only natural satellite of the Earth, and it may have appeared shortly after the birth of the Earth. The moon has accompanied the earth for billions of years, so when humans appeared, they never stopped thinking about the remnants of the moon.

The moon was created by the accumulation of cosmic dust after the universe was large, and almost all planets were formed in this way.

The moon was formed because of the big **, and the universe was big ** formed a lot of debris, and the moon is one of the debris.

The Moon is a natural satellite orbiting the Earth and is the only celestial body that orbits the Earth. The Earth and the Moon form a celestial system called the Earth-Moon system. In the Earth-Moon system, the Earth is the central celestial body, so the movement of the Earth-Moon system is generally described as the orbital motion of the Moon towards the Earth.

The average distance between the Moon and the Earth is about 384,400 km. The Moon's orbit around the Earth is an elliptical orbit, with an average distance of 363,300 kilometers at its perigee, i.e., at its closest to the Earth, and an average distance of 405,500 kilometers at its apogee, i.e., at its farthest point from the Earth, a difference of 42,200 kilometers.

The time of formation of the Moon, the origin of any planet in the Earth-Moon system, is closely related to each other

Unlike many other planets in the solar system that have multiple moons, our earth has only one natural satellite, the moon, and the direction of the earth's rotation is also highly consistent with the direction of the moon's rotation. Although the diameter of the Moon is about a quarter of the diameter of the Earth, and its mass is less than one-tenth of the Earth's mass, the Earth-Moon system has certainly maintained such an operation for billions of years.

The Moon is the only natural satellite of the Earth and the only celestial body that orbits the Earth. Its average distance from the Earth is about 384,400 km. The Moon's orbit around the Earth is an elliptical orbit with an average distance of 363,300 km at its perigee (when it is closest to Earth) and 405,500 km at its apogee (when it is farthest from Earth), a difference of 42,200 km.

The Moon, commonly known as the Moon, also known as Taiyin and Xuantu in ancient times, is the only natural satellite of the Earth and the fifth largest satellite in the solar system. With a quarter the diameter and eightieth the mass of the Earth, the Moon is the most massive moon relative to the planets it orbits and the second densest moon in the solar system, after Europa. The surface of the moon is covered with craters formed by meteorite impacts.

The Moon is now about 30 times the diameter of the Earth.

The rotation of the Moon is synchronized with its revolution (tidally locked) and therefore always faces the Earth on the same side. The gravitational influence of the Moon causes the tides of the Earth's oceans and the lengthening of each day. The ratio of the size of the moon to the sun is similar to the ratio of distance, so that its apparent size is almost the same as that of the sun, and the moon can completely obscure the sun during a solar eclipse to form a total solar eclipse.

On the moon, the mountains are undulating and densely packed with peaks. There is no volcanic activity, no life, a calm world. It is already known that there are 22 moon seas with a total area of 5 million square kilometers.

On the surface of the moon as seen from the Earth, there are 10 larger lunar seas: the Storm Ocean, the Rain Sea, the Cloud Sea, the Wet Sea, and the Vapor Sea in the east, and the Dangerous Sea, the Chenghai Sea, the Quiet Sea, the Abundant Sea, and the Wine Sea in the west. These lunar seas are filled with large amounts of lava erupted from the interior of the moon, and some craters in the lunar sea basin are also covered by erupting lava, forming large-scale dark lava plains.

Therefore, the formation of the Moon Sea basin and the subsequent lava eruption constitute one of the most important events in the history of the Moon's evolution.

The planets, the Earth, and the Moon each have their own unique characteristics:

1.Planets: Planets are planets in the solar system that are usually larger and heavier. They orbit the Sun, and the four closest planets are Mercury, Venus, Earth, and Mars. Each planet has its own unique climate, environment, and surface characteristics.

2.Earth: Earth is the planet we live on and the only planet in the solar system where life is known. It has an atmosphere, water resources and a diverse biome, but it is also affected by human activities on the environment. Plexus infiltration.

3.The Moon is the only satellite of the Earth, and its surface exhibits features such as gray rocks and craters. It has no atmosphere or water resources, and its temperature fluctuates dramatically. The Moon is of great significance to the exploration of space and the understanding of the history of the universe.

In the Earth-Moon system, what does the Moon have no effect on the Earth? （）a.Blocks the damage of solar radiation to the earth.

b.It has withstood the impact of some small celestial bodies on the Earth.

c.Causes tidal changes in the Earth's oceans.

d.The gravitational pull of the Moon slows down the Earth's rotation.

e.Cause the instability of the Earth's autobiographical posture code this modulus width line.

Correct Answer: ae

Real effects: the creation of tides, the slowing down of the Earth's rotation, the stabilization of the Earth's axis relative to the ecliptic plane, and the precession of the Earth's axis (precession) together with the Sun. Stabilizing the Earth's axial inclination is crucial, as the Earth's climate maintains long-term stability and is conducive to the long-term survival of life forms that are very intolerant to animals.

Who can really create enough tides in people? Only the Earth, of course. How can the earth create tides in people?

When the gravitational pull of the earth acting on people is not counteracted by the supporting force, such as when the model traveler takes off. So you should go and see if high jumpers, skydiving enthusiasts, astronauts are constantly in mood swings.

The volume of the Moon is not only 1 4 of the Earth's volume, but its direct diameter is basically 1 4 of the Earth's diameter. From the perspective of the main star and the moon, the Moon is indeed a bit large, but it is not yet the largest relative moon in the solar system. From the perspective of objectively larger moons, the smallest difference between the proportion of the main star and the satellite should be Pluto and its moon Charon, and the diameter of Charon is basically 1 2 of the diameter of Pluto.

Between planets, the one with the greater mass will attract the one with the lesser mass, which is the logic of the universe. The distance between the Moon and the Earth determines the locking of gravity. If the two planets are very close, the moon will be directly attracted to the earth, a phenomenon that was experienced in the primitive stage of cosmic chaos, but after hundreds of millions of years of running-in in the universe, it is no more.

The distance between the Moon and the Earth, and the centrifugal force generated by the Moon's rotation, cancel out the attraction of force from the Earth. The earth has captured the moon, but the earth's gravitational pull is moderate, and it cannot attract the moon to collide without making the moon escape, which is the stable distance between the earth and the moon, and the universe is this stable distance, keeping the sky full of stars and stars.

It is normal for the Moon to be a satellite of the Earth and smaller than the Earth, otherwise it would not be called a satellite again. Their size was formed during the formation of the solar system, when the original equilibrium was broken and a new equilibrium system was established in space.

The Moon has a role to play in the operation of the Earth, and without the Moon, the Earth would not be able to function normally.

It has a certain effect on the movement of the earth, but this effect is not too large, because the earth mainly revolves around the sun.

It also plays an extremely important role in the operation of the earth, and it is the moon that attracts some celestial bodies that fly to the earth, so it is very difficult to hail when the earth is damaged.

The Moon Zheng is the Earth's synchronous rotation satellite, and its rotation period around its axis is the same as its orbit around the Earth, which makes it almost always face the same side towards the Earth. It had previously swirled and cracked at a relatively high speed, but later slowed down due to tidal friction on the Earth, until it finally faced the Earth with the same head, i.e., tidal locking.

It has a certain traction effect, it slows down our rotation, attracts some other celestial bodies, affects the tides of the earth, and has a yellow-red angle.

It must have a certain effect, if there is no satellite, then the earth will not have a very good operation. And there will be some problems.