In the current human civilization, no matter whether they are still alive or dead, everyone, everyone, except Zhao Changxing, no one has ever been to the earth.
In the history of thousands of years, everything about the earth has appeared over and over again in various literary and artistic works. People can tell without thinking about the predecessors living on the earth who were at the extremes of technology.
Those amazing achievements created under backward conditions, knowing the Great Wall, knowing Qin Shihuang's Mausoleum, knowing the Grand Canal, knowing the pyramids, and so on.
Most of the various film and television dramas take place on the earth. Through advanced CG technology, people have simulated all the scenery on the earth. Blue sky, sea, icebergs, snowfields, grasslands, lakes, rivers...
Everyone clearly knows that they are from the earth. Human blood flows in their bodies. Even the people from deep space or Moyun Litar people clearly know where their cultural heritage comes from.
In the midst of thoughts that were too complex to be described in words, in the vast space, Zhao Changxing and others were riding a space carrier, hundreds of kilometers away from the earth, orbiting the earth at a speed of several hours.
This allowed them to see almost the entire planet.
The earth at this moment is different from the earth described in any film and television works with abundant materials and flourishing of all things.
At this moment, it is khaki. It is not just a place that is khaki, but... the whole world.
The entire earth, almost everywhere, is earthy yellow. Just like Mars.
No matter where it was before, it was a large lake or a grassland, whether it was a vast ocean or a dense jungle, at this moment, it was all earthy yellow.
The ocean has disappeared from the earth. Too strong solar radiation evaporates all water sources on the surface, causing them to escape into the atmosphere. Too strong solar wind "blows" them directly into space.
The four oceans have become four basins. There is no longer enough water to fill them up.
Even at this moment, the concentration of the earth's atmosphere has dropped to less than one-tenth of what it was a thousand years ago.
Even invisible to the naked eye, in the direction of the earth facing away from the sun, something like the tail of a comet has appeared.
All this is because of that black hole.
"Let's go."
A landing spacecraft and a space shuttle ship, carrying the ashes of the people who had passed away, as well as Zhao Changxing and others, passed through the atmosphere and landed on the surface of the earth.
According to the longitude and latitude, the place where we are now should have been the administrative, economic, and cultural center of the entire earth nearly a thousand years ago.
This used to be a super metropolis that was so prosperous that no film or television work could show it. It used to be filled with high-rise buildings and elevated highways. It used to be bustling with traffic and bustling with people.
But now, all Zhao Changxing and the civilization leaders see is only a piece of yellow sand, and some broken walls occasionally exposed on the surface under the wind and sand.
There are even some... bones that occasionally appear on the surface.
Wearing a spacesuit, Zhao Changxing stepped on the yellow sand that was hundreds of degrees Celsius - the average temperature on the earth's surface at this moment was as high as 106 degrees Celsius, and walked to the white bones.
After cleaning up the yellow sand a little, he could clearly see the entire skeleton.
It should have been a dog when it was alive.
In the most prosperous place in the world, perhaps it had an owner who loved and cared for it at that time. But human civilization has become a thing of the past on this planet. Without shelter, its fate has been doomed.
"Just right here."
Zhao Changxing's expression was calm, and there was no sign of sadness or joy. He gave instructions in a calm tone.
As a result, the following cargo spacecraft took off again until it reached an altitude of one thousand meters. After that, its cargo door opened, and under the operation of the automatic equipment, one after another urns were opened and placed inside.
The ashes were blown away by the hot wind, although the atmospheric concentration had dropped to about one-tenth of the previous level, but it was still fierce.
Zhao Changxing clearly saw the gray-black dust pouring out of the cabin and then floating to an unknown distance.
In this way, they stayed forever on this planet that gave birth to human civilization. Moreover, they avoided the possibility of their corpses being desecrated by any enemy.
They will sleep forever on this planet, together with the tens of billions of people from the old human civilization who once lived here but have all died now.
Zhao Changxing stayed on the earth for several hours. Most of the time, he stood quietly, or found a place to sit quietly. He seemed to be looking into the distance, but he didn't seem to see anything.
, just thinking quietly.
No one knows what he saw or what he thought.
After that, he stood up, his voice still calm: "Let's go."
The group of people took the space shuttle again and returned to the space carrier. After that, the space carrier immediately began to accelerate.
Unlike the Yuanhang spacecraft, the acceleration of this space carrier was so rapid that Zhao Changxing could even feel obvious overload pressure.
After only two weeks of orbiting the Earth, it gained enough speed to break away from the Earth's gravitational field. So it sped away in the direction of the sun.
Zhao Changxing stood in front of the porthole, still looking steadily in the direction of the earth. He looked at it for a long time, until the earth became a bright spot and no details could be seen anymore.
He knew that once he left, he wouldn't know when he would come back.
What's more likely is that he will never be able to come back.
After leaving the earth, the space carrier successively passed the orbits of Venus and Mercury. After that, it gradually approached the sun.
The strong gravity from the sun gives the space carrier extremely high acceleration, allowing it to increase its speed a lot without consuming too much fuel.
The Yuan Voyage spacecraft, which has already passed by the sun, also used the power of the sun.
In essence, this is stealing the kinetic energy of the sun and turning it into its own kinetic energy. But the sun is so big that the loss of such a small amount of energy cannot even be observed at all.
It's like a virus landed on an aircraft carrier.
At the place closest to the sun, through observation equipment with multiple light filters, Zhao Changxing saw with his own eyes the appearance of the culprit that destroyed human civilization and would certainly destroy the entire solar system.
It is not appropriate to say that I saw it with my own eyes, because the black hole is too small. Even if its mass is as high as fifteen times the mass of the earth at this moment, its radius is still less than 10 centimeters.
At such a long distance, especially with the interference of the sun, it is impossible to see it with your own eyes, even with powerful observation equipment.
What Zhao Changxing saw was the impact it had.
It is just a small celestial body with a radius of less than 10 centimeters, but it has created an accretion disk with a diameter of tens of thousands of kilometers, and caused the material in the accretion disk to rotate crazily around itself.
During this violent rotation, part of the material acquired high enough energy and was ejected directly from the poles of the black hole, forming a high-energy jet. While the other part of the material accelerated to its fastest speed
, fell into the black hole and turned into the mass of the black hole.
During this process, most of their physical quantities were lost, leaving only three physical quantities: mass, charge, and angular momentum.
This is the so-called black hole hairless theorem.
Outside the accretion disk, the gas in the solar atmosphere is continuously attracted by the gravitational force of the black hole. Because in this place, the gravitational force of the black hole is greater than the gravitational force of the sun.
The sun continues to lose its own mass in this way. At the same time, the loss of the sun's mass in turn affects its own stability. This leads to the continuous outbreak of extremely high-intensity coronal mass ejections, flares, etc., forming extremely violent
The solar wind sweeps across the entire solar system.
It is precisely because of this process that all water sources on the earth have been completely evaporated, and even the atmospheric concentration has been reduced to less than one-tenth of its original value, and it is still decreasing.
Facing this black hole that threatens to annihilate the entire solar system, people's thoughts are extremely complex.
Speaking of hatred, of course there is. After all, it brought all these disasters. However, people clearly know that it is just a natural celestial body.
It has no life and no self-will. All these actions are not its active actions.
Perhaps the gravitational battle between some extremely distant stars finally allowed it to obtain a forward trajectory toward the solar system, which ultimately caused this result.
In this respect, it is also innocent.
Zhao Changxing looked at it for a long time, but in the end he could only sigh.
If you want to hate it, you should hate yourself for not being strong enough.
If human civilization is strong enough, it might be possible to avoid all of this from happening. In fact, even the threat of the Moyun Litar civilization is no longer afraid, so why is it leaving its homeland and escaping to other star systems at this moment?
At this moment, the acceleration using the sun has been completed. The space carrier is moving away from the sun at an extremely high speed, chasing the Yuan Voyage spacecraft.
Looking at the still bright sun, Zhao Changxing made a vow in his heart.
"I will lead human civilization to continue to grow strong until all disasters, whether natural or man-made, can no longer threaten us, until everyone who makes up human civilization can live a peaceful and happy life.
When that time comes, I will definitely return to the hometown that gave birth to us and make everything get back on track."
Time was still passing slowly. At this moment, the space carrier finally caught up with the Yuanhang spacecraft, which was still accelerating.