Many planets in the universe are moving at high speeds, so where does their kinetic energy come from

In the universe, there is motion in any celestial body, and no celestial body is completely stationary. Planets revolve around stars, stars revolve around the center of galaxies, and even huge galaxies and groups of galaxies revolve around a certain point. So, why are all celestial bodies in the universe in motion and not stationary?

To put it simply, if the celestial bodies in the universe do not move, they will only end up in destruction. It can be said that those objects that want to be "stationary" have been destroyed, and all that remains are moving bodies.

At a certain scale of the universe, gravity plays a dominant role. Newton believed that there is a gravitational force between all things. Einstein believed that gravity is a geometric effect produced by an object after bending space-time, and the object will inevitably move along the curved space-time in space-time, so it will exhibit a gravitational effect.

Either way, any celestial body has a gravitational pull.

Since there is a gravitational attraction between celestial bodies, the distance between them will gradually get closer under the influence of gravity, and eventually they will collide or merge. But if there is a suitable orbital motion of the celestial body, the gravitational pull will be canceled out and the celestial body will be able to exist stably in space.

During the motion of the planets around the stars, the gravitational pull happens to act as a centripetal force, and the planets can move in orbit. On the other hand, in a galaxy, all celestial bodies such as nebulae, stars, planets, etc., have a common center of mass, which is exactly the center of the galaxy. All the celestial bodies in the galaxy use this as the center of gravity and move around it.

In fact, since Michelson and Morey did their famous light interference experiments, people have recognized that there is no absolute space in the universe, and that there is no reference frame for absolute rest. According to the theory of relativity, motion is absolute, while rest is relative.

So, the initial impetus for the movement of the celestial bodies comes from? Why can celestial bodies maintain their motion for a long time?

If we want to trace back to the source, the initial driving force of the movement of celestial bodies in the universe comes from the pure energy of the universe 13.8 billion years ago. After the birth of the universe, matter (mainly hydrogen and helium) began to form, and they dispersed into space. After a long period of cooling, a series of celestial bodies such as galaxies, stars, and planets are gradually formed from the gas clouds of hydrogen and helium.

Since the particles that make up the gas cloud are doing irregular thermal motion, they collide with each other to gain some angular momentum in a certain direction. When celestial bodies form from these nebulae, they inherit their original angular momentum, so they remain in motion. And in the almost vacuum of space, the motion of celestial bodies is hardly affected by drag, so as long as there is an initial revolving angular momentum, the celestial body can continue to revolve around a certain center of gravity.

The high-speed motion of the planets in the universe mainly comes from the high-speed motion of atoms. There is also a gravitational attraction between the planets, which converts it into kinetic energy, which follows the law of conservation of energy.

Many planets in the universe are moving at high speeds, and their energy comes partly from their own energy, and partly from the interaction forces with other stars.

Because of the gravitational attraction of stars, many planets move around stars, and the gravitational pull of the mass of the star is very large, which can capture many asteroids to revolve around it, and the kinetic energy of the planet comes from the gravitational pull of the star.

It should originate from the magnetic field inside them, and if there are thoughts, a certain power will be generated, which will provide the energy for them to operate.

SpaceshipThe dynamics of the movement in space ** are:Reaction forceThe way it moves may be different from that of the Earth.

According to the plan, the astronauts of the space station will work about six and a half hours a day, with about two and a half hours for exercise and eight and a half hours for sleeping. Like all of us, they always squeeze in some time after work to have some entertainment. Walter Sibes, a NASA psychologist who specializes in long-term space research, said these activities, while secondary, are useful for maintaining a good mental state.

They don't have a sports locker, so they have to pack their sports gear.

In addition to space treadmills and stationary bikes, they also play gravity-free basketballs, frisbees and boomerangs.

and several sports that have to be named. It's just that in a gravity-free environment, they have to change the rules of the game.

Form the background. In order to make the most of the precious time in space, some astronauts are using their brains to think about some feasible space sports in the future. Garrett Riesman, an American astronaut who is now working on the space station, said that sometimes they just had a whim.

We started fiddling with large hydration bladders filled with water like we did with fitness balls to simulate an aerial baseball game. We recognize that movement is a big deal. However, he said he had to relearn how to throw the ball vertically.

The former commander of Expedition 16, Peggy Whitson, and 2 other colleagues had a different plan, organizing six astronauts from the Expedition 16 and 17 teams to hold an air relay race. "We started at one end of the capsule, then the people waiting at the second and third capsules followed, and then we sprinted back one by one," Whitson said.

So it's very interesting. The result was that she and Riesman's group won the game.

All the matter in the universe, all celestial bodies are in motion, stars and planets are no exception, usually planets revolve around stars, and stars revolve around the mass center of larger celestial bodies, their kinetic energy and motion tendency come from the motion tendency of their own primitive matter, but there are also kinetic energy and motion tendencies formed when they collide and merge with other celestial bodies.

Stars and planets have different processes of formation, which also causes them to move faster and slower, December 24, the National Astronomical Observatories of the Chinese Academy of Sciences.

An astronomical observation and research results were announced, and an astronomical research team of the station passed through the Guo Shoujing telescope in China.

And observations from the European Space Agency's Gaia Space Telescope found 591 stars that were speeding at high speeds, the most ever discovered by scientists at high speeds.

A total of 550 high-speed stars have been discovered, so the data released this time doubles the number of high-speed stars that scientists have discovered.

Every star is in motion, and the speed of the sun is up to 250 kilometers per second, but such a speed can only be moderate, and the threshold of high-speed stars is 400 kilometers per second, and the speed of the sun is still a certain distance compared to it.

Of the nearly 600 high-speed stars, the fastest one even ran at 1,700 kilometers per second, more than 2,000 times faster than the speed of the cannon (usually 700 to 1,500 meters), and the researchers predicted that the star would eventually fly out of the Milky Way.

There are 42 more wandering stars, with a similar fate, also because they are all very fast, exceeding the gravitationally bound fourth cosmic velocity of the Milky Way (the speed required for stars varies depending on the location, but this speed is 550 kilometers per second near Earth).

The Milky Way looks like a swirling cloud of smoke, although everyone can not feel any changes in its shape throughout their lives, but in fact it has been changing, the sun needs hundreds of millions of years to orbit the Milky Way, so it takes 100 years of life to perceive the changes in the Milky Way, it is not much different, and if you look at its changes in tens of millions or billions of years, then its changes are still obvious, and the positions of stars will basically move greatly, Some stars joined the Milky Way, while others fled the Milky Way.

In order for a star to escape from the Milky Way, it must gain a great amount of kinetic energy, so the stars that can escape from the Milky Way must have experienced a large "twist and turn", many of which should be affected by the gravitational acceleration effect of black holes or massive stars under special circumstances (generally at least the double gravity of two celestial bodies), or by the supernova explosion of stars orbiting each other.

So it's not easy for stars to escape the Milky Way, which is why high-speed stars are very rare in the Milky Way!

The planet's power comes partly from its revolving stars, and partly from its own gravitational pull. When planets are formed, dust and plates collide with each other under the action of gravity, and part of the force is forever turned into kinetic energy.

There are many dynamics for planets to rotate, such as which one of the universes is born, or the gravitational pull of other heavier stars, plus there is almost no resistance in the universe, so these forces can make these planets rotate for tens of thousands of years or even longer.

The kinetic energy comes from the stars because the planets always revolve around the stars, and the stars have a strong gravitational pull, and these planets can only follow the stars at high speed under the gravitational pull of the stars.

In the movement of the wild belt star around the sun, the speed is the same as the ridge of the reed.

a.That's right. b.Mistake.

Correct answer: B

Exercise does not necessarily have energy conversion, but only when the exercise state changes will there be energy changes. There is no air in space, and the planet is almost free of resistance, which can be regarded as an ideal state without resistance, according to Newton's law, an object will continue to move unless force forces it to change this state, so the rotation and revolution will continue forever, and no energy is required to maintain it.

The energy of rotation and revolution is the first of gravity. The energy generated by gravity allows the planet to rotate and revolution, which can be regarded as the energy produced by atomic forces.

The energy comes from the law of gravitation, which is the attraction between two planets, which causes the planet to rotate and revolution.

Certainly not "God kicked them." The laws of the operation of celestial bodies in the universe are all due to gravitational attraction, and there may be the influence of dark matter and dark energy on a larger scale, and the kinetic energy is the process of mutual attraction and collision of matter.

The observation of the formation process of the star system outside the solar system shows that when the star system is formed, a large number of interstellar dust gases accelerate and collide with each other due to the attraction of gravity, and they are combined in the process of collision, and part of the kinetic energy is converted into heat, and part of it still exists in the form of kinetic energy, and the rotational kinetic energy can also be obtained in the collision process. The Earth's rotation period used to be much shorter than it is now, and due to the influence of the moon and other factors, it slowed down to 24 hours per week.

Gravity exists objectively, classical mechanics explains the law of gravity, relativity explains the reason for the formation of gravity from a more essential level, and now human beings have a better understanding of the properties and essence of gravity.

It is a long-range force, no matter how far away the objects are from each other, there is a gravitational effect, the magnitude of the gravitational force is related to the product of mass and the reciprocal product of the square of the distance, which is caused by the curvature of space-time, and the laws of the planets are falling to the **star, and the speed will be faster and faster, but because in addition to the **star, other celestial bodies will also affect each other, and the orbit will continue to change, which is measurable, but the general change is very slow, and it takes a very long time to change significantly.

At a higher level, galaxies also interact with each other due to gravity, and human observations have shown that dark matter and dark energy also play a role in the formation of galaxies, so that in the universe, the motion is absolute, and there is no celestial body that does not change in motion. Under the interaction of the gravitational pull of the center of the star and this angular momentum, the material begins to rotate around the star while rotating at the same time. Thus, the universe has formed the picture it is today:

Stars revolve around nebulae, and planets revolve around stars.

All energies in the universe are conserved and can be converted into each other. These kinetic energies are formed through the gravitational attraction between the planets, through the conversion between energies.

These kinetic energies are provided by gravity, and the ** of these gravitational forces is the stars around them.

The movement of the planets around the stars does not rely on kinetic energy, but on the thrust generated by the original big **, and there is no air in the universe, so there is no resistance, and the planets have been moving by inertia until now.

The total energy of the entire universe is unchanged from its birth to the present, and its energy is always being transformed, and if you want to say where the source of energy comes from, I think it should be released by the great ** 14 billion years ago.

According to the mainstream statement, everything before the big ** and even time is meaningless Energy can be said to be a part of the universe The energy of the big ** was there at the beginning At that time, the universe itself was a point, and the huge energy and mass could not stay in this small space for a long time, so it was ** From then on, it can be said that there was time It is meaningless to discuss the form of material energy time before it is meaningless, that is to say, there is no big ** before After that, various material particles began to form Objects are gravitationally attracted to each other, and the small ones fall on top of the big ones, and the big ones become larger, and they attract the surrounding matter, and this collision releases a lot of energy, and this process causes some of the small objects that are falling towards the massive object to deflect off their tracks, or to fly into the surrounding space, or to rotate around the massive object, and that's how the kinetic energy is generated, as it says downstairs.

In the end, everything that should have fallen is over, and the universe is probably what it is today, and of course it's a lot more complicated than I said, but that's about it.