Does the Earth always revolve around the Sun? Why does the Earth revolve around the Sun?

In fact, strictly speaking, the Earth does not revolve around the Sun, but around the center of mass of the system that the Earth and the Sun make up (if the influence of other celestial bodies is not taken into account). This is because the effect of gravity is concentrated in this point, which means that the earth seems to be attracted to this one point. After studying high school physics, I know that in this case, as long as the initial velocity is not towards this center of mass (the earth is obviously not moving towards this center, the lucky one) will make a uniform circular or elliptical motion, in fact, the real circular motion does not exist, because there is resistance, its speed will continue to decrease, of course, this decrease is very small on the earth, otherwise we would have been baked.

Since the mass of the Sun is much greater than that of the Earth, the center of mass mentioned above can almost be considered to be in the center of the Sun. So there's nothing wrong with the Earth revolving around the sun.

In fact, there is a gravitational force between every two objects, and the mass of the earth is significantly smaller than that of the sun, so it almost revolves around it, unless the sun explodes in 5 billion years, or some planet with enough mass to affect the earth's gravitational field comes to the vicinity of the earth's gravitational field, then it is not necessarily the earth revolving around the sun.

In fact, it is not that the planets revolve around the sun, but that the entire solar system rotates around the center of mass of the solar system, but the mass of the sun accounts for more than 99% of the solar system, so the center of mass of the solar system is very close to the center of mass of the sun.

From the perspective of Newtonian mechanics, because of the gravitational force in the solar system, and the absolute proportion of the sun's mass, the planets revolve around the sun, but it seems that such a result should be a circular orbit, but in fact it is an elliptical orbit. From the point of view of relativistic mechanics, the mass of the Sun deforms the surrounding space, forming the motion of the surrounding planets around the Sun.

The principle of rotation between the stars is the same as when we take a small rope and tie a rubber hoop.

We picked the eraser and gave it an outward centrifugal force.

When the centrifugal force is greater than the pulling force, the rope will break the rubber and fly out in a straight line; When the pulling force is less, the rubber will lose the power to rotate and fall down; When the centrifugal force and the pulling force are equal, the eraser will rotate around our hand and will neither fly out nor fall off.

The same is true of the principle of rotation between stars, gravitational attraction.

It's the invisible rope. Because the pulling force of the sun is the same as the centrifugal force of the earth's rotation, the earth will continue to rotate and will not fly away from the sun, nor will it rush headlong towards the sun.

The earth only rotates because the sun rotates at high speed. The equatorial plane of the solar system space body of the solar system, which is rotated by the gravitational pull of the sun due to the rotation of the sun, does not rotate itself.

The rotation of the earth is due to the fact that the gravity of the earth body has a heavy region and a light region, so that the heavy region presses on the light region and rotates. It's like a ball on an inclined plane rolling down. The difference is that the ball on the inclined plane rolls down and is a condition given by the inclined plane.

The rotation of the earth is the reaction of the sun's light and heat with the water on the surface of the earth and the expansion of the earth into qi and leaving the ground, making the sphere the lightest during the day. At night, the water vapor that expands into gas by the interaction with the sun's light and heat increases the weight of the sphere at night, and the area of the sphere is the heaviest every morning, and the heavy side presses the light side to rotate. It can be seen that the rotation of the earth is not the effect of the gravitational force of the sun, nor is it the effect of inertia, it is not rotation at all, but the movement of energy.

The statement that the earth revolves around the sun is as follows:

This is an ancient and esoteric question, and there have been many speculations and hypotheses about this question in the history of mankind. It was not until Copernicus proposed the doctrine of geocentrism that it was gradually accepted. But now, it is not until scientists have more knowledge about the universe that we have a more comprehensive understanding and answer to this question.

First of all, let's be clear that the reason why the Earth revolves around the Sun is not because of gravity. Although gravity is one of the fundamental principles of force for the Earth's motion around the Sun, if it were only its effect, the Earth would rotate on its own like the Moon, because gravity is so significant for the interaction of objects in the entire celestial system.

The earth is able to revolve around the sun because it has enough mass and high enough speed. Mass gives the Earth enough to attract other smaller bodies to its surroundings. Whereas, velocity determines the trajectory and period of the Earth's motion around the Sun.

From a physical point of view, the laws of conservation of mass, velocity, and angular momentum of the Earth are the fundamental principles that cause the Earth to revolve around the Sun. The greater the mass, the greater the gravitational pull that exerts on other celestial bodies.

The faster the speed, the more stable the trajectory of the Earth's balance and defeat around the Sun, and at the same time, it will also affect the tilt angle of the Earth's rotation and seasonal changes. The law of conservation of angular momentum guarantees that the rotation of the Earth in motion and the reference coordinate system remain unchanged.

In addition to the above physical principles, there are many other factors that affect the Earth's rotation around the Sun. For example, gravitational interactions occur between the planets of the solar system, and these interactions cause the trajectory of each planet to change slightly.

The internal thermodynamics of the Earth can lead to changes in the Earth's morphology and gravitational field, which will also affect its trajectory. The particles and radiation emitted by the sun will also have a certain impact on the earth's climate and environment.

The Lord is the result of the gravitational force acting on the Sun and the Earth, and the gravitational force happens to be the centripetal force of the Earth's circular motion around the Sun.

The Earth and the Sun were formed by the same nebula, and the rudiments of the Sun were the first to form in the entire solar system, and by this time it had a strong gravitational pull that was strong enough for all the celestial bodies in the solar system to move around it. The earth is no exception.

Here's why the Earth revolves around the Sun:

The Earth, as one of the closest planets in the solar system to the Sun, orbits the Sun. This movement is due to the laws of gravity and inertia, as well as the flow of large amounts of plankton during the formation of the early solar system.

First, the motion of the Earth around the Sun can be explained by Newton's law of universal gravitation. The law of gravity states that there is an interaction force between all objects, and that the force exerted on small objects decreases with the decrease in the distance between them and is proportional to their mass.

Hence, the mass of the Sun is huge, and the gravitational pull it exerts on the Earth is strong, and this gravitational pull is the attraction of the Earth towards the Sun, thus keeping the Earth in non-stop motion around the Sun.

Secondly, the motion of the earth around the sun can also be explained by the law of inertia. The law of inertia is one of Newton's laws of motion, which states that any object must remain in its original state (rest or two-point velocity) unless disturbed by an external force. If the earth is not subject to the gravitational pull of the sun, then it will fly out of the solar system by inertia and thus lose its motion around the sun.

However, the gravitational pull exerted by the Sun on the Earth makes the Earth subject to its inertia; Therefore, it still revolves around the sun along a specific track.

Finally, in the early days of the formation of the solar system, the movement and collision of material during the formation process also formed the cause of the rotation of celestial bodies around the sun. According to scientists, when the solar system was formed, a large amount of gas and dust surrounded the sun.

These gases and dusts are usually in a rotating state, for example, due to friction, collision and gravitational interaction between them, they gradually form a trajectory similar to the orbit of the planets of the solar system, and on the basis of this, they form regular celestial movements.

In summary, the Earth's motion around the Sun is formed by a combination of factors such as the laws of gravity, the laws of inertia, and the flow and collision of materials in the early solar system. This movement not only affects the seasons of the earth, but also gives us the only place of life on the earth, which is an incomparably magical phenomenon in nature.

As for the question of why the earth revolves around the sun, I believe that the earth revolves around the sun because of the magnetic field coil orbital traction of the sun's magnetic field. Why? Because the sun is the core of the solar system, it has a huge volume and mass, and it also has an invisible and huge magnetic field, and the range involved in the solar magnetic field is the space range of the solar system, and it is also the space range of the solar system that occupies the universe.

The sun has a strong gravitational pull, under the action of gravity, these large planets are susceptible to the action of the sun's gravity, so the nine planets are under the action of the sun's gravity, orbiting around their own fixed orbits, some small "planets", because they are far away from the sun and close to the planets, they are affected by the gravitational pull of nearby planets, and follow the planets, and the moon on the edge of the earth is an example. Under the gravitational pull of the earth, the moon orbits the earth, so that the moon orbits the earth as the calculation of the lunar calendar, and the earth's revolution around the sun is determined to be the calculation of the Gregorian calendar, and now our calendar is divided into the Gregorian calendar and the lunar calendar.

Due to the random rotation motion of the sun, the magnetic coils at different distances in the magnetic field will produce the traction phenomenon of the circular motion of the large planets in the solar system, and form the natural orbit of the solar system at different distances. Currently, the solar system has passed about 5 billion years.

In the state of continuous ultra-high temperature nuclear fusion combustion of solar nuclear energy materials, it can emit light and heat and dust particles for the solar system at all times, and always give birth to the growth and expansion of the solar system's health materials, and has formed eight planetary bodies, including the earth where we human beings live, the earth is in the solar system's solar thermal energy temperature difference space interval for circular circulation, and its natural temperature is in the habitable zone moderate temperature difference phenomenon, which is the gift of the sun innate to the earth to run a natural orbit.

It can always nurture the growth of the earth's biosphere and our human beings. Therefore, our earth must follow the rules of the game of the traction of the sun's magnetic field, and follow the orbit of the magnetic coil given to the earth by the sun, and move in a circular motion around the sun invariably. Therefore, the earth revolves around the sun because of the traction force of the magnetic coil orbit of the sun's magnetic field.

Because the Earth is a planet in the solar system, and the Earth is subject to the gravitational pull of the sun, it revolves around the sun.

There is a gravitational force and a centrifugal force between the sun and the earth, and the mass of the sun is greater than that of the earth, and the earth revolves around the sun.

The volume and weight of the sun is very large, and it has an attraction to the earth, and this attraction acts as the centripetal force of the earth to make a uniform circular motion around the sun, therefore, under the action of this centripetal force, the earth can move around the sun.

This attraction exists between any two objects. This attraction between objects is prevalent between all things in the universe and is called gravitational force.

Gravitation is an interaction between objects due to the mass they have. Its size is related to the mass of the object and the distance between the two objects. The greater the mass of the object, the greater the gravitational pull between them; The farther apart the objects, the less gravitational pull there is between them.

The reality is that the Earth and the Sun move together around their common centroid point. Since this common centroid point is located on the sun, humans only observe the movement of the earth around the "sun, that is, the center of mass at the sun", and cannot see the movement of the sun around the mass point at the sun (since this mass point is not in the center of the sun, the sun also has a small precessional motion) - a small precession.

Of course, modern scientists have observed and calculated this movement of the sun.

As for why it rotates, it is generally believed that in order to maintain a stable orbit (without hitting the Sun), a centrifugal force opposite to the centripetal force (gravitational force) is required, so that the planet or (natural) satellite will move in a circular motion (including an ellipse).

Gravitational attraction and the earth and the sun attract each other, and the magnitude of the gravitational force should be equal, but because the mass of the sun is large, it is the earth that revolves around the sun, and if the masses of the two are about the same, they will surround each other

The Sun is larger than the Earth. The Earth is attracted to the Sun due to its gravitational pull and moves in a circular motion, and the centripetal force generated by it prevents the Earth from colliding with the Sun

It will be a long time later.

On the first floor, you know that energy is conserved.

But do you know that the state you want is the ideal state?

That was a conjecture of Newton.

There is no absolute conservation of energy.

Just like you throw a ball in space.

It doesn't go all the way forward.

It's going to fall after a while!!

Yes, when the Sun's gravitational pull is not strong enough to pull the Earth, the Earth will not revolve around the Sun.