Hai Ge couldn't read anymore, so he pressed the newspaper on the small dining table, slapped the chip on the corner of the paper, and the newspaper disappeared like a receding water stain.

……

The farther you go to the northern hemisphere of the Earth, the darker it gets. Haige had been on the train for four days, but she hadn't gone through a full cycle of day and night.

The sky was no longer a vivid blue, like long-used leather, which had faded from the edges to an old withered yellow, but when the train passed, the yellow faded again and again, until it faded into an unsightly gray. The weird sky is just playing a game of chasing with people walking on the ground.

There is not a trace of clouds to be seen, and the water vapor is evaporated by the scorching sun, not only does it not form a cloud, but the air is also terrifyingly dry, and if people do not replenish water in time, their lips will be dry and chapped. And the yellow and white ribbons that Hai Ge saw in the shadow illusion, which will appear on the earth of the end of the world, are already faintly visible at this time, but they are too faint, if he hadn't known about their existence for a long time, so he deliberately looked for them, he wouldn't have noticed them.

It is clear to Haige that the bands are not specific "things", but rather parts of the dense atmosphere that are beginning to thin out, resulting in the creation of cavities. Sooner or later, the shape of the ribbon will widen and intersect with each other to form huge round holes, and it will be difficult for humans to find a place to continue to survive on the surface of the earth.

Express trains at the end of the 22nd century, with speeds of up to 1,200 kilometers per hour, were basically the average of civil airliners in the last century. Although the speed is fast, there are many stops along the way, and because it is an international express line, the train has to cross the border from one country to another, and will pass through a third country on the way, so the total travel time for passengers to get on and off the train, plus border security, is more than 100 hours.

Nowadays, people can only use hours to calculate the total train travel time, and the concept of "day" or "day" is no longer applicable, and the earthlings have reluctantly accepted the fact that if they want to see the morning, they must go to the southern hemisphere of the earth, and if they want to see dusk or night, they have to go north.

Waking up early to watch the sunrise at dawn, watching the stars after dusk, or watching the full moon on a clear tide night in the middle of the moon has faded into romantic and beautiful memories. But for Haige's generation, these can at least be called memories, if the earth's climate continues to deteriorate, people have to worry that when their next generation, and the next generation of the next generation, is born, admiring the sun and the moon or stargazing, it will only be the content of history textbooks, I am afraid that most of the earthlings at that time will no longer know that day and night can still appear in turn within 24 hours.

In the sleeper next to Hai Ge, two scholars, one biologist and the other astrophysicist, lived in the sleeper next door, and he could often hear the two arguing fiercely.

The biologist told the physicist: "I don't believe that the sun will die, and I don't believe that the earth will be implicated because of this." It would be the biggest disaster if humanity pushed the earth out of its current orbit because of excessive panic. Can you imagine the consequences of that? The strong seismic force generated when the planet changes its orbit is likely to affect the earth's core, resulting in the extravasation of liquid iron-nickel at a high temperature of 6,000 degrees Celsius. Do you know what that means? It means that volcanoes will erupt from the ground on a large scale, which will cause landslides and tsunamis, and super earthquakes of magnitude 10 or higher will cause the earth's crust to change again, and the geography of the seven continents and four oceans will definitely undergo the first major change since the Cretaceous period. As a result of this change, the ocean, which accounts for 70% of the total area of the earth, was poured into the land, and human beings disappeared cleanly in the blue waters, and the earth returned to the chaos of the Pangea era, and it was no longer possible to distinguish between heaven and earth, until hundreds of millions of years later, the land resurfaced from the sea, and the marine life also evolved and matured, climbed back to the shore, evolved into mammals, and then humans reappeared. Of course, this is the most optimistic assumption, on the premise that God still chooses human beings as the masters of the earth. If he thinks that man is too vulnerable, and that life is not as tough as flies or mosquitoes flying in the sky, it is difficult to say that the master of the earth has been replaced by other species. ”

The physicist listened attentively, but apparently disagreed with the biologists, and after listening to it gave his opinion.

"I said Yingshuo, your argument is exactly the pessimistic thought that the Global Federation of Science and Technology wants to put an end to! According to the latest research, Laplace's dynamic theory, which is based on Newton's third law, can build an orbit to the Milky Way as long as a stable Lagrange point can be found on the Earth, the Sun, and beyond the Kuiper Belt. With the stability of the triangle, the eccentricity of this orbit will reach a minimum, which fully guarantees that the Earth will set sail in equilibrium. ”

"Hahaha~" The biologist named Yingshuo laughed mockingly, "Your theory sounds impeccable, and no matter which formula is used to extrapolate, it can prove its feasibility." However, Brother Song En, there is always a layer of paper between theory and practice, and if the paper is not broken, no matter how great the theory is, it can only be a flash in the pan, which will not only fail to bring hope to mankind, but will also be a heavy blow. Wangmei can't quench her thirst, what do you say? ”

Song En was very unconvinced and argued: "The earth's orbit change is not completely a fool's dream! As long as there is a pull force greater than the mass of the earth itself, or at least at the level of the same level, we can drag the parent star away from the disaster site and escape to the new cosmic space without being perceived by the earthlings. I admit that changes in the atmosphere will have some impact on life on Earth, but it will certainly not lead to the extinction of all living things, because as long as the amount of oxygen in the air remains the same, life can survive normally. When the earth is freed from the high temperatures caused by the solar cataclysm, the oxygen molecules in the atmosphere recombine with the hydrogen molecules to form water, and the heavy rain replenishes the dry oceans, will our happy and beautiful life come back? ”

The two scholars have their own opinions, and each seems to have a point. Haige was eager to understand what they were arguing about, but she was getting more and more confused. The only bit of astronomical and geographical knowledge he knows is all learned from the success of nanorobots during the shadow journey, and he understands the concepts of earth orbit change, Lagrange points, triangular orbits, etc., and expands them to connect with the overall situation of the earth, and then analyzes them in depth, he can't do it, so he should stand on Yingshuo's side, or support Song En, he can't make up his mind, he only knows that Song En's plan to save the earth is feasible, and he is one of the executors of this plan.

As a result, he developed a strong sense of pride, and for the first time, he had the pride to hold his head high in front of a scholar. Of course, it didn't matter whether he had low self-esteem or pride, the scholars were so focused on each other's arguments that they didn't even notice that a teenager was eavesdropping next to him.