The earth is spinning slower and slower

On a cosmic scale, the Earth not only rotates around the Sun at all times but also rotates itself at all times. Rotation brings many natural phenomena to human beings on Earth: day and night, deflection of horizontal movement of objects, the difference in local time by one hour every 15 degrees of longitude, and so on.

However, according to scientists' calculations in recent years, the Earth's rotation speed is not constant; it slows down on average by half a second every year, 0.0015 seconds per day, with an overall trend of increasing slowness. According to the law estimates, after 63 million years, the Earth will completely stop rotating, then what should humans living on Earth do?

Earth's rotation

The Earth's rotation is geographic knowledge that we learned in high school. According to the relevant research, there is no absolute static object in the universe, galaxies, and galaxies, celestial bodies, and celestial bodies, or by the influence of external forces must maintain their movement to maintain balance, the Earth is no exception.

On a cosmic scale, the Earth revolves around the Sun, the Sun revolves around the Milky Way, the Milky Way revolves around other star clusters, and so on, but in addition, the Earth itself also revolves.

So why does the Earth revolve? Honestly, all the celestial bodies in the universe, including black holes, have rotation, and it seems a bit out of place if the Earth does not. To explain this, we have to look at the formation process of celestial bodies.

The formation process of celestial bodies in the universe is inevitably under the effect of gravity constant contraction, but in the contraction before and during the contraction process, the formation of celestial material can not be without movement.

There is no way that the sum of the total angular momentum of these motions concerning the contraction center can be precisely equal to zero. According to the theory of conservation of angular momentum, the final contraction of the celestial body formed by the total angular momentum will not be equal to zero, so it will have to rotate to maintain balance, or the planet will be destroyed in an instant, there is no possibility of formation.

Is not only the Earth like this, everything in the universe, including neutron stars, can not be an exception.

According to scientists, further research found that the speed of the Earth's rotation is not eternal, the current rotation of the Earth will take about 24 hours, while 400 million years ago, the Earth only needs 21.5 hours to rotate a circle. From here we can also see that the Earth's rotation speed is slowing down!

According to scientists' calculations, the Earth's rotation speed has been slowing down by one thousandth to two-thousandths of a second every day for the last 100 years.

So why is the Earth's rotation slowing down? First, it is affected by the tidal locking of the Earth and the Moon. As we all know, as a satellite of the Earth, the Moon always keeps a face toward the Earth, which is because the Moon's rotation speed is locked by the tides on the Earth, and the traction force is greater than its rotation speed, so the Moon cannot rotate.

But at the same time, the Moon also reacts to the Earth, making the Earth rotate slower and slower.

Second, it is interfered with by human activities. In recent years, with the progress of science and technology, countries have launched a large number of vehicles, artificial satellites, and manned rockets into space; the reaction force of these technological products will affect the rotation of the Earth, although the magnitude of the impact is small, eventually the Earth's rotation will slow down.

What will happen when the earth stops rotating

Many scientists believe that: with the speed of human civilization's progress, when the effect on the Earth's rotation will become more and more obvious, almost 63 million years after the Earth will completely stop rotating, and by then what should mankind do?

Before answering the question, we may want to understand how the Earth's surface environment will be affected after it stops rotating. If the Earth's rotation really stops one day, or the rotation drops to a critical value, and human civilization still exists at that time, then mankind will face a series of horrible natural disasters.

The first is the unprecedented hurricane. Although the Earth has stopped rotating, the Earth's outer atmosphere will continue to move because of inertia. The atmosphere is supposed to live on the surface of the human umbrella, but now they will rotate with the surface friction, producing super hurricanes and engulfing all the energy.

What is the size of such hurricanes? The largest known typhoon is the outbreak of the "Sammy" over the Pacific Northwest, which became the largest typhoon with a force of 17 wind, that is, 60 meters per second wind speed.

But if it is due to atmospheric inertia generated by the hurricane, the power is probably more than a thousand times the typhoon "Sammy"; when people in the wind blowing at 1400 km/h to fly away from the earth, I am afraid that even the opportunity to resist.

Suppose that you are lucky to be located underground several thousand meters in the air-raid shelter to escape the hurricane disaster, do not worry, there is a bigger disaster waiting for you later. Hurricanes can not only blow people and human buildings, but that lined with the seven continents of the five oceans at this time is also scraping thousands of meters of huge waves towards the land.

Do you say you are not on the surface of the land that the waves can not shoot you? Do not worry, in the impact of the waves, under the sea volcanoes are about to make an appearance.

We all know that the world's volcanic distribution is a certain coherence, which means that when a submarine volcano inadvertently erupted, it is likely to trigger a chain reaction leading to a common global eruption of volcanoes.

This is not without precedent speculation when the extinction of the dinosaurs is not because of meteorite impact led to surface volcanic eruptions. It is said that the lava rained on the surface for a hundred years, and the global temperature is high.

If the Earth stops rotating after 6300 years, it is clear that humans may face the same fate as the dinosaurs, there is no other way but to destroy. At this time, even if you hide to the depths of 5000 meters underground is useless, the surface of the soil due to volcanic baking produces a lot of high temperatures, and human beings underground will be afraid of being steamed.

Of course, perhaps we do not need to look at the Earth to stop rotating with such a desperate vision.

We can think about it, human beings with only two centuries of technological progress to achieve space exploration, to achieve the moon plan; that we still have 6300 years of development time, then human civilization will be terrible to what extent? The earth stopped rotating we either go to immigrate, or let it resume rotation!