Humanity is missing, luckily I have billions of clones.

Chapter 171 Frozen to Death by High Temperature
Li Qingsong has always been curious about the Oort Cloud.

That is, the Oort Cloud... does it really exist?

Although various theories of solar system evolution support the existence of the Oort Cloud, and some celestial bodies suspected to be from the Oort Cloud have been discovered within the solar system, such as comets and asteroids, the true Oort Cloud has never been observed by humans, not even Li Qingsong.

It is estimated that there may be trillions of celestial bodies in the Oort Cloud that are larger than 1 km in size, and even billions that are larger than 20 kilometers in size.

The total mass of the Oort Cloud objects is more than five times that of the Earth.

More mass than five Earths lies scattered around the edge of the solar system, never before seen by anyone.

It might seem difficult to understand why so many objects and masses have never been seen, but the reason is simple.

The Oort Cloud is simply too vast.

The area between 0.03 light-years and 1.5 light-years from the Sun may belong to the Oort Cloud.

The total volume of this area is about 1.17 trillion trillion cubic kilometers, which is five times the mass of the Earth, about 3*10^25 kilograms. If this mass is spread over such a vast area, the average mass per cubic kilometer is only 2.6 trillionths of a gram, which is roughly equivalent to a few hundredths of a PM2.5 particle.

Five times the mass of the Earth seems huge, but compared to such a vast area it is still too small, and the material here is still too scarce.

It is not easy to find a celestial body that may be only tens of kilometers or even tens of meters in size in such a vast space.

But verifying whether the Oort Cloud really exists is of great significance to Li Qingsong.

This will enable him to improve his theory of the evolution of the solar system and further increase his understanding of the universe.

This may not bring any benefits in the short term and cannot be converted into combat power or specific technology, but it is extremely important in the long run.

Human civilization, no, Li Qingsong believes that all the knowledge and all the physical theories mastered by all intelligent life are essentially an understanding of the universe.

How much one knows about the universe determines how much knowledge a civilization can master, and thus how advanced its technology, combat power, and survival ability will be.

Studying the origin of the solar system is a process of enhancing our understanding of the universe.

If I can reach a higher level of technology in the future, I will also conduct research on more galaxies and larger-scale cosmic structures.

At this distance, Li Qingsong controlled many unmanned exploration spacecraft to leave the fleet and disperse in the vast space. Like a sieve, he began to carefully screen in this vast space.

The distance between the farthest unmanned exploration spacecraft and the main fleet reached about 1 million kilometers.

With the main fleet as the center and a radius of 1 million kilometers, Li Qingsong's detection cross-section reached about 3.14 trillion square kilometers.

Taking this place as the starting point, assuming that the edge of the Oort Cloud is 1 light-year away from the sun, then sailing from here to the edge of the Oort Cloud is equivalent to Li Qingsong scanning, detecting and searching a cylinder with a base area of 3.14 quadrillion square kilometers and a height of about 1 light-year.

The volume of this cylinder reaches about 2.95*10^29 cubic kilometers, accounting for about billionths of the total volume of the Oort Cloud.

According to existing theories, the total mass of objects in the Oort Cloud is five times that of the Earth, or 3*10^25 kilograms. Assuming that these substances are evenly distributed, then by scanning a volume of 7.5 trillionths, from a probability perspective, approximately 10*14^7.5 kilograms, or about trillion tons of matter, can be discovered.

7.5 quadrillion tons of material, based on the theoretical average density of comets and asteroids in the Oort Cloud, which is approximately 0.6 grams per cubic centimeter, is equivalent to an asteroid with a radius of 67 kilometers, or 300 asteroids with a radius of 10 kilometers. Overall, if current theories of solar system evolution are correct, the probability of discovering macroscopic Oort Cloud material during this journey is very high.

In the vast void, Li Qingsong controlled this huge fleet to continuously accelerate and scan all the voids around it.

Time passes quietly like this.

Li Qingsong discovered that the density of matter in the space he was in was constantly decreasing, from about 3 to 10 particles per cubic centimeter around the solar system to about 0.05 to 0.1 particles per cubic centimeter now.

The density has been reduced by more than ten times.

But one special thing is that the "temperature" here is very high, even reaching tens of thousands of degrees Celsius.

On Earth, temperatures of tens of thousands of degrees Celsius can melt everything, but here, temperatures of tens of thousands of degrees Celsius cannot melt anything.

If the clone is thrown into this high temperature, it may slowly freeze to death.

The reason is simple: temperature is an indicator of the average kinetic energy of particles. The extremely fast speeds of particles here mean extremely high temperatures.

However, their material density is extremely low. Even if the kinetic energy of a single particle is high, the overall energy is still extremely low from a macroscopic perspective. This results in the coexistence of high temperature and freezing to death.

This seemed to be somewhat different from previous expectations. Li Qingsong decisively dispatched more scientific research personnel to begin studying this phenomenon, trying to find the underlying cause.

Even in this vast empty void, there are still too many physical phenomena that Li Qingsong has never seen before.

This migration is not just a migration, it is also a scientific research journey.

Time passes by in constant observation, constant research, and constant acceleration.

Several years passed quietly, and the fleet finally accelerated to the predetermined maximum speed.

Li Qingsong's migration fleet was faster than the Bluetuk people's migration fleet, reaching 4% of the speed of light, or about 1.2 kilometers per second.

At this moment, the fleet reached its maximum speed and stopped accelerating. The gravity that had always enveloped the entire fleet, which was about 250/1 of the Earth's gravity due to the acceleration, finally disappeared.

The blueprint people and clones living in the roller spaceship finally no longer have to suffer from the tiny gravity that is always there and seems to be pulling them to one side.

At this moment, the distance between the fleet and the sun has reached 1.8 trillion kilometers, about 0.19 light years.

At this distance, Li Qingsong looked back at the sun again.

In the sky, the sun is still extremely bright and conspicuous.

The Sun seen here still has an apparent magnitude of about -6.34.

If you were standing on Earth, Venus would be the brightest celestial body in the sky besides the Sun and the Moon. However, its brightness is only -4.89.

(End of this chapter)