After scientists' calculations, the Rotation of the Earth is getting slower and slower, averaging half a second slower per year and 0.0015 seconds slower every day, and the rate of slowing down will be faster and faster. Therefore, our daily day is not a constant 24 hours, the so-called "24 hours a day" statement, also refers to the approximation.
In the last 40 years, the Earth has slowed down by about 25 seconds, an average of 0.6 seconds slower per year, and at this rate, scientists calculate that in another 63 million years, the Earth will stop rotating. This also confirms the correct assertion that the Moon is moving away from the Earth at a rate of 3.8 centimeters per year. Because the Earth's rotation gradually slows down, its gravitational pull on the Moon is getting smaller and smaller, so our Earth is turning slower and slower, causing the Moon to move farther and farther away from us.
Why is the Earth turning slower and slower? Scientists believe that the volume of the Earth is gradually increasing because of expansion, its radius is slowly increasing, and the tidal action between the Earth and the Moon causes the friction to gradually increase, so its rotation is slowly decelerating, but because the time is very long, it slows down very slowly, so we do not feel it. But the gradual deceleration of the Earth's rotation is certain. Geologists and paleontologists have discovered that 440 million years ago, during the Late Ordovician Period, the earth's year was 412 days, two thousand years later. That is, by the time of the Middle-TimeLurian Period 420 million years ago, the Earth had only 400 days a year, and by the Middle Devonian Period 370 million years ago, there were only 398 days left in the year, and then to the Late Carboniferous Period 100 million years ago, there were 385 days left every year, 65 million years ago in the Cretaceous Period, which was 376 days a year, and now, we have 365.25 days a year, and at this rate, after more than 60 million years, one day of the Earth is equal to zero, that is, it will no longer rotate.
The terrifying thing is that the rotation speed of the earth in the year is not consistent, and scientists observe the relative motion between the sun and the earth by using quartz clock timing to find that the earth rotates slowly in the spring and fast in the autumn. Its orbit is not uniform, the Earth's orbit is elliptical, the perihelion is 10 million miles away from the aphelion, from the aphelion to the perihelion, the speed gradually accelerates, on the contrary, from the perihelion to the aphelion, the speed gradually slows down.
The earth's axis of rotation and rotation are not vertical, but are obliquely rotated and swayed back and forth, rotating like a top in a conical shape. Therefore, the rotation and rotation of the Earth is a very complex combination of rotational motion, not a simple linear velocity and angular velocity. The earth is like a drunkard, swaying, fast and slow, both swinging around the sun and staggering itself.
When the earth was first born, it was only 6 hours a day, that is, it rotated in 6 hours, and because it gradually slowed down, now our day has become 24 hours, and in a few years, the day of the earth will become eternal. At that time, the side facing the sun will be scorching the sun, and the heat will be unbearable, while the side facing the sun will be cold and dark.
Do not underestimate the rotation of the earth, because the rotation has day and night, and the temperature will not be too hot and too cold. Once the earth stops spinning, it will be a tragedy and the world will become very frightening. Some people think that the change of the four seasons of the year is caused by the rotation of the earth, in fact, this is a wrong view, the change of the four seasons on the earth is caused by the sway of the earth, because of the swing, the sun's light is scanning back and forth, which has the Tropic of Cancer. If the earth is circling the sun, then there is no change of seasons, a place is spring is always spring, some place is summer, it is always summer, somewhere is winter, it is always winter.
This is by no means appalling, it is well documented. Chinese scientists found cyanobacteria fossils in Yunnan in 2003, according to the annual ring study on the fossils, it is a marine plant 1.3 billion years ago, it has 500 annual rings, which is a strong proof that the earth was 1.3 billion years ago, at least 500 days a year. American biologists have found from the coral fossils that the polyps that lived 400 million years ago have 400 annual rings, which shows that 400 million years ago, a year on the earth was about 400 days.
In fact, everything in the universe is running fast, and there are no eternal and unchanging celestial bodies and matter. What we call "stars" is actually relative, such as the sun, which is not motionless, on the contrary, the sun is carrying everything in the solar system around the Milky Way at a fast speed, so fast that we can't imagine that it takes 226 million years to circle the Milky Way. And the Milky Way is not stationary, it carries 120 billion "solar systems" and a large number of star clusters and nebulae are also running fast, it is rotating around a huge black hole in the middle, too fast to be expressed in numbers. So, in a split second, we've moved trillions of kilometers, which isn't alarmist, it's true.
Please comb carefully, the rotation of the earth, even if we are motionless, we are moving more than 400 meters in one second. The orbit of the Earth, on the other hand, runs nearly 60 miles per second while we are motionless, while the Sun orbits the Milky Way with the Earth for 500 miles per second, while the Milky Way orbits the Black Hole with the Solar System at 1200 miles per second, that is, even if you are motionless, you run about 880 kilometers in one second. What do you think? Isn't it a little scary? Anyway, I was very afraid of it. Maybe you just slept and woke up 25 million kilometers away from where you slept!