The earth has been rotating for 4.6 billion years. Where does the power come from?

It has been 46 years since the birth of the earth, which is a quite long concept of time. Compared with the billions of years on earth, the decades of human life are very short. The cycle of life, in the eyes of the earth, is a glimpse, short and insignificant. Man's life is very short in front of the age of the earth. For example, if you have 100 million yuan and then lose one yuan and two dollars, will you care? I certainly don't care. These are nine Niu Yi hairs!

As we all know, the earth is not static. It rotates and revolves all the time, and the speed is quite fast. The sun, the moon and all the celestial bodies in the universe are moving fast. They do their jobs, and they operate quickly according to their own laws of rotation and revolution, without stopping for a moment. It takes 24 hours (close to the numerical value) for the earth to rotate once, that is, one day and night, and its circumference is 80 thousand Li (approximately, in the equatorial region), that is to say, even if it doesn't move, it runs 80 thousand Li one day and night. This is the origin of the phrase "sit on the ground and shake the mountains, travel 80 thousand miles a day". Not only that, but the earth is still turning around the sun. One lap is a year, and the revolution speed of the earth is faster than the rotation speed.

The rotation speed of the earth is 465 meters per second, and the revolution speed is 29.79 kilometers per second. How many roads do we run around the sun in a year? Take a year 365 24 60 60 times 29.79. This is a very large number. The rotation of the earth brings day and night, and the revolution brings changes of the four seasons. This is the colorful life on earth.

Then the question comes, which is also an unavoidable and unavoidable question: where does the power of the earth come from? Does the earth have an engine? Obviously not. As we all know, the law of conservation of energy shows that it is impossible for any moving object to generate motive power out of thin air, and there is no perpetual motion machine in the world. Huang Wei has been studying in the reform institute for war criminals for a long time, and it turns out that it is also a joke. So, where does the power of the rapid movement of the earth come from? And the weight of the earth is 6 trillion tons, so heavy and so big that no engine can move, even if it can, it can't make the earth turn so fast!

In fact, the answer is complex, profound and simple, which can be summarized in two words: gravity! The universe is full of all kinds of gravity, and gravity is everywhere. The satellite revolves around the planet, the planet revolves around the star, the star revolves around the galaxy, and the galaxy where the earth is located, the Milky Way, is also flying rapidly to the center of the universe. In short, all celestial bodies are moving at an unimaginable speed all the time.

The energy of the earth comes from the sun. Like other celestial bodies in the solar system, it is locked by the great gravity of the sun. With the unparalleled power of the sun, the earth moves rapidly in the direction and speed it was originally formed, never stopping and never getting tired. I'm afraid it's difficult to calculate how many miles the earth has traveled since its birth.

So, don't think that you are sitting at home motionless and carefree. In fact, in the blink of an eye, you have left your position for dozens of kilometers. For celestial bodies, time and space are very large and frightening. In the boundless universe, time, speed and distance can no longer be expressed by numbers. For example, the distance between celestial bodies in the universe cannot be kilometers, but light years. Time units are in years.

A star that we inadvertently see when we look up at night is actually very far away from us. Even light takes decades or even hundreds of years to get there. The sunshine shining on you at this moment has actually existed for tens of thousands of years. After it is generated from the burning of the sun, it expands and radiates from the inside of the sun to the edge, and finally it takes100000 years to reach the surface of the sun. After a pleasant journey of 8 minutes, it was filmed on the earth.

In distant proxima centauri, if you can see the earth, you will see the earth hundreds of thousands of years ago. There are no humans on the earth, only dinosaurs, and it is a world ruled by primitive animals. Because it takes tens of thousands of years for the speed of light to reach that star. If you are farther away, you will see what the earth looked like at the beginning of its formation, a desolate and quiet place, just like Mars now. Therefore, time can go back, provided that the distance! If you stand on a planet more than 2200 light-years away from the earth and look at the earth, what you see is Qin Shihuang's enthronement ceremony!