When did the moon appear near the Earth and where did it come from?

After countless scientists.

conjectures and assumptions, many theories have been derived, and the moon has been conjectured.

It is through the gravitational pull that escapes when passing through the earth.

Attracted over.

Centrifugal force caused by rotation of the outer ring of a flat ring.

Beyond the attraction of gravity, the outer ring breaks with the center. The center continues to condense into the sun, and the outer ring is driven by centrifugal force, but slowly floats outward, which are the eight planets today.

Earth is among these), and of course there are some comets and asteroids. Flee.

It is said that the earth and the moon were originally one, and for some reason, the moon escaped, but it was restrained by the earth's gravity and failed to really go away, and finally became a mirror hanging in the sky.

In fact, there are many holes in this view, if the moon is separated from the interior of the earth, then it is inevitable to talk about escaping power, where does the power come from? It is nothing more than the inside or outside of the earth, and the outside is the vast universe, but no matter what kind of force, since it can separate the moon, the force must be huge or even unstoppable, so how can it be restrained again by the gravitational pull of the earth?

Scientists have also given strong evidence that the age of the rocks brought back from the moon is actually older than that of the rocks on the earth, and the composition of the moon's rocks is very different from that of the earth.

Darwin. An interesting phenomenon was discovered through calculations: the moon is gradually moving away from the earth!

He discovered that the distance between the Earth and the Moon was only 10,000 kilometers four billion years ago, which was not much larger than the radius of the Earth. Therefore, he came up with a bold assumption: the moon and the earth were originally one, and then the moon fled from the earth because of a major change.

This is the origin of Darwin's escape theory, although the view is wrong, but we can also find one of the interesting things, the moon obviously revolves around the earth well, why did it change its trajectory and slowly escape? According to the current scientific and technological measurements, the moon is escaping at a speed of kilometers per second, which is a very small number, but if you change it to a daily day, every year, it will be amazing! That's 200,000 kilometers in one day, which can circle the earth five times!

We know that the reason why the Earth can hold the Moon is because of gravity. If the Earth were a very solid sphere, gravity would not change its trajectory except for holding the Moon in place. In other words, the Moon will obediently move in a certain orbit, neither increasing nor slowing down.

In general, it should be because some of the gravitational attraction of the earth to the moon is attracted, and then after Darwin's conjecture, although it is wrong, some theories can be conjectured.

The moon came to the vicinity of the Earth about 12,000 years ago. It was originally a huge comet that hovered over the Earth and orbited around the Earth because it was attracted to the Earth's magnetic field.

According to historical records, the moon appeared for a long time, such as in ancient poets and texts. The Moon is a planet that appears in the galaxy at the same time as the Earth.

The moon has been near the Earth since the beginning of time. It appears with the earth. It's like a neighbor. Neither can be separated from each other.

When the moon is full, the moon is in a straight line with the earth and the sun, the earth is in the middle of the straight line, and the moon and sun are at the opposite ends of the earth.

When the moon turns into a large disk, it is the time of the full moon. Look at the diagram above. At this point, the Earth is in the middle. The Sun is on the right side of the diagram, and the Moon at the time of the Full Moon is on the left side of the diagram, and the three form a straight line.

The Moon is a satellite of the Earth.

Moon: commonly known as the moon, also known as Taiyin, Xuantu, Chanjuan, Yupan in ancient times, is the satellite of the earth, and is the fifth largest satellite in the solar system, the diameter of the moon is about a quarter of the earth, the mass is about one-eighty-one of the earth, the mass ratio of the satellites in the solar system relative to the planets around it. The Moon is the most massive moon, and its surface is covered with craters formed by the impact of small celestial bodies, and the average distance between the Moon and the Earth is about 380,000 kilometers, about 30 times the diameter of the Earth.

Satellite: refers to the orbit around a planet and according to the closed orbit of the periodic operation of the natural celestial body, artificial satellites can also be called satellites, artificial satellites are built by human beings, with space flight vehicles such as rockets, space shuttles, etc. launched into space, like natural satellites around the earth or other planets of the device, often gas planets of the satellite are many.

The Moon is a satellite of the Earth.

Moon: commonly known as the moon, also known as Taiyin, Xuantu, Chanjuan, Yupan in ancient times, is the satellite of the earth, and is the fifth largest satellite in the solar system, the diameter of the moon is about a quarter of the earth, the mass is about one-eighty-one of the earth, the mass ratio of the satellites in the solar system relative to the planets around it. The Moon is the largest moon of the mass, and its surface is covered with craters formed by the impact of small celestial bodies, and the average distance between the Moon and the Earth is about 380,000 kilometers, about 30 times the diameter of the Earth.

Clearance. Satellite: refers to the orbit around a planet and according to the closed orbit of the periodic operation of the natural celestial body, artificial satellites can generally also be called Liang Zhengzao satellites, artificial satellites are built by human beings, with space flight vehicles such as rockets, space shuttles, etc. launched into space, like natural satellites around the earth or other planets of the device, often gas planets of the moon are many.

The average distance of the Moon from the Earth is about 10,000 kilometers, the distance from the Earth's farthest apogee is 10,000 kilometers, and the distance from the Earth's perigee is 10,000 kilometers. The moon generally refers to the moon, which is a spherical celestial body that revolves around the earth and is also the only natural satellite of the earth.

The Moon is the fifth-largest moon in the solar system, with an average radius of about kilometers, which is equivalent to times the radius of the Earth; The mass is close to kilograms, which is twice that of the Earth. The surface of the Moon is covered with craters formed by the impact of small celestial bodies.

The rotation of the moon. The Moon rotates while revolving around the Earth, and the period day is exactly a sidereal month, so we can't see the far side of the Moon. This phenomenon is called "synchronous rotation", or "tide locking", and is almost a universal law in the world of solar system satellites.

It is thought to be the result of the long-term tidal action of satellites on planets. The balance movement is a wonderful phenomenon that allows us to see 59% of the surface of the moon. There are mainly the following reasons:

1) In different parts of the elliptical orbit, the rotation speed does not match the angular velocity of the revolution.

2) The intersection of the white and equator.

The distance between the Moon and the Earth, once a month, has a perigee

and apogee ; Since the perigee on July 22 is the closest two stars have been to each other in the past 18 years, there is a so-called "super-large moon"! However, astronomical experts say that the moon actually looks about the same size at perigee every month; The naked eye can't tell the difference there!

He Hongru reports).

As we all know, the Earth's orbit around the Sun is an elliptical orbit, the Earth's apogee distance from the Sun is 152 million kilometers, the perigee distance is 147 million kilometers, the difference between the two is 5 million kilometers, the Earth orbits the Sun for 365 days, that is, 8760 hours, the distance of its radial movement is 10 million kilometers, the average speed of the radial movement is kilometers per hour, and the time from morning to noon is calculated as 6 hours, The displacement of the Earth from the Sun due to the radial velocity of the Earth is 6849 km, which is obviously greater than the radius of the Earth. From the above analysis, it can be seen that when the sun is closer to us in a day is determined by the position of the earth in the sun's orbit.

When the Earth reaches perihelion (around December 22 of the winter solstice), the Sun is closest to the Earth, and from this day, the Earth begins to move away from the Sun until the aphelion (summer solstice, around June 22), so the Sun in the morning will always be closer to us than the Sun at noon in the process of moving from perihelion to aphelion. In the process of moving from aphelion to perihelion, the sun is always farther away every morning than the sun at noon.