Bright Sword starts with the grenade flat.

Chapter 432 Liu Qi's Mantle Cooling Plan

After Liu Xiu said this, Liu Qi still walked out of Liu Xiu's office with the plan feeling a little disappointed.

Looking at Liu Qi's lost back, Liu Xiu could only hope that he could recover from this blow and become stronger!
Of course, Liu Xiu hoped that Liu Qi could come up with a better plan.

After all, it is well known that the interior of the wandering blue planet is divided into several layers like an onion. The outermost layer is the crust, the mantle is below, and then the core.

The deeper you go, the higher the temperature. So far, the deepest well humans have ever drilled is the Kola Well, which was drilled by the giant bear. According to its data, the temperature is 70 degrees at 5 kilometers underground, and it reaches 220 degrees at 12 kilometers.

Of course, this is also why the underground city is built five kilometers underground. Although the temperature five kilometers underground is seventy degrees, after leaving the sun, when the surface temperature reaches minus eighty or ninety degrees Celsius, the temperature five kilometers below will reach about ten to twenty degrees, which is suitable for human habitation.

Even in 2110, the Kola Superdeep Borehole is still the man-made product with the greatest vertical depth. But unfortunately, it is only 12,226 meters, which is only more than 200 meters deeper than the Mariana Trench, and is still far from penetrating the earth's crust.

After all, the crust that carries everything we know is only about 70 kilometers thick at its thickest point, and the mantle is 27890 kilometers below, composed of silicate rocks rich in iron and magnesium. It is the thickest layer on the wandering blue planet, and the temperature is as terrifying as 1,410 degrees Celsius.

But this has not reached the deepest part of the Wandering Blue Planet. There is a core with a radius of about 3,470 kilometers, so the temperature can obviously be even higher.

And according to existing research, the core of the earth is divided into the inner core and the outer core, which is mainly composed of iron and nickel elements and has a very high density. So although its volume only accounts for 16.2% of the volume of the entire wandering blue star, its mass accounts for 31.5% of the mass of the entire wandering blue star.

It is speculated that the outer core is molten or liquid, and the temperature at the boundary between it and the mantle can be close to 2,700 degrees Celsius. At the junction of the outer core and the inner core, the temperature directly doubles to over 6,000 degrees Celsius, which is similar to the surface of the sun.

You should know that at this temperature, almost everything, including metals, diamonds and other substances, will evaporate into gas. It is only because the core is deep in the planet, where the pressure is equally high, that it can remain in liquid or solid form.

As for why the interior of the Wandering Blue Planet is so hot, it is obviously not because of the sunlight. After all, light cannot penetrate the surface and reach the depths of the Wandering Blue Planet.

So if we look deeper, the high temperature inside the wandering blue star is closely related to the process of its birth! It originated from the explosion of a supernova 4.6 billion years ago, from which a large number of elements were sent to all parts of the universe!

Coupled with the effect of gravity, various substances began to gather again and gradually formed the solar system with the sun as the core. The lighter elements formed the sun or gas planets such as Jupiter, while the heavier elements combined to form rocky planets such as the wandering blue star.

The important thing is that in order to form a rocky planet the size of a wandering blue star, there must be almost a billion asteroids with a diameter of more than ten kilometers. Therefore, it is conceivable that a wandering blue star must have experienced countless impacts from planets and comets during its formation.

Therefore, the kinetic energy of the celestial body is converted into internal energy and accumulated after repeated collisions, which becomes the initial source of internal heat of the wandering blue planet.

In fact, when the Wandering Blue Star was first formed, not only the interior but also the entire surface of the Wandering Blue Star was in a molten state. Now the surface of the Wandering Blue Star has cooled down.

However, the cooling speed inside the Wandering Blue Star is much slower, because a large amount of radioactive elements have been deposited inside the Wandering Blue Star since its birth. The heat released by their decay allows the Wandering Blue Star to maintain its temperature for a long time.

The tidal effect between the wandering blue planet and other celestial bodies, such as the moon and the sun, is also one of the important reasons why the wandering blue planet can maintain high temperature. As we all know, there is gravity between celestial bodies. The tides of the ocean on our wandering blue planet are caused by the gravity of some celestial bodies such as the moon and the sun.

And under the pull of gravity, not only the ocean, but the entire wandering blue planet will be slightly deformed. The friction caused by the deformation can generate heat, so it also provides heat energy for the interior of the wandering blue planet.

In addition, the heat insulation effect of the earth's crust is also good. The crust is only 70 kilometers thick and as thin as an eggshell, but it perfectly isolates the 1,400-degree mantle from the cold surface. It plays a very good role in heat preservation. This is also the secret of the Wandering Blue Star's interior maintaining a temperature similar to that of the sun's surface for billions of years.

But what would happen if the wandering blue planet suddenly cooled down? The answer is obvious. All the life on the wandering blue planet, including humans, would also cool down! Once the core of the earth completely solidifies, the wandering blue planet would lose its precious magnetic field. This is because the magnetic field of the wandering blue planet is generated by the continuous flow of the outer layer of the liquid core.

Without a magnetic field, a wandering blue planet will eventually evolve into a dead star like Mercury and Mars, where no life can survive. After all, the magnetic field is the key to helping humans on the surface avoid the attack of solar storms and is a protective umbrella for life from cosmic rays and other various radiation threats.

However, if the mantle core of the wandering blue star is not allowed to cool down, then the wandering blue star will only be a fresh egg, which will be destroyed with just the slightest force.

And if the mantle and core of the wandering blue planet cool down, such fresh eggs will become cooked tea eggs.

Anyone with a little common sense knows that the strength of tea eggs is far superior to that of fresh eggs. A tea egg can be dropped from a height of one meter and bounce a few times before being fine, while a fresh egg will have the egg white and yolk all over the floor.

As for the fact that the magnetic field of the wandering blue planet would disappear as the mantle and core cool down, leaving humans without protection, Liu Xiu was not worried.

Because the roof of the ecological greenhouse, which is a nano-scale silver film, can completely reflect the high-energy rays of the universe, there is no need to worry about the loss of the magnetic field of the wandering blue planet causing radiation damage to humans on the surface.

It’s a pity that cooling down the mantle and core of the Wandering Blue Planet is not an easy task. In fact, Liu Xiu also thought about cooling down the mantle and core to enhance the strength of the Wandering Blue Planet, but after thinking about it, he couldn’t find any better solution.

What Liu Xiu didn't expect was that when Liu Xiu rejected Liu Qi's planetary engine enhancement plan last time.

It hasn't even been a month yet, and Liu Qi actually came to Liu Xiu with a plan report.

Liu Xiu was a little dazed as he looked at the report Liu Qi handed him.

Because this report is actually a feasibility report on the mantle cooling plan.

After Liu Qi handed the report to Liu Xiu, before Liu Xiu even opened his mouth, he said:
"Although my plan consumes more resources than the construction of 20,000 planetary engines, once this plan succeeds, the overall strength of the Wandering Blue Planet will be ten or even a hundred times greater than before!"

(End of this chapter)