Earth Era

Just as Zhao Lan thought, Lobachevsky space is just a space among mathematical concepts. It is a space described by Lobachevsky geometry. There are many peculiar phenomena in this space. For example, in this space, the pi ratio is larger than that of normal space, and the sum of the interior angles of a triangle is smaller than that of normal space. At the same time, in Roche space, at least two parallel lines can be drawn through a point outside the straight line, but a circle may not be drawn through three points that are not on the same straight line... and so on.

This was originally just a concept in mathematics, but in this record, Li Yunfan said that he had found such a space in the real universe and confirmed this through field measurements.

If normal space, that is, the space described by Euclidean geometry, is straight, then the space described by Lobachevsky geometry is "curved". If a space is curved, then it seems reasonable that the stars that can be observed in normal space cannot be observed in such a space. Zhao Lan could imagine such a scene. Because of the curvature and bending of space in Luo's space, some parts of space may be hidden due to the "folds" of space. The light of the stars does not completely travel along the space, but directly After crossing this folded space, it spread directly to the other side of the fold. Then people in the space among the folds will naturally not be able to see those stars.

It's like a river or a ditch appears in space. The light is an animal jumping directly over the ravine or river. It jumped directly over and did not follow the ditch wall to the bottom of the gully.

As for why stars that are further away disappear earlier, this can be explained by the curvature of space. Although a two-dimensional plane can be compared to space, it is not exact. The characteristics of space cannot be completely described by a two-dimensional piece of paper. Zhao Lan guessed that the farther away the stars are from the earth, the greater the curvature of space is, so they are more likely to disappear from the earth's field of vision.

"Could it be that... our earth is in Lobachevsky space at this moment?" Zhao Lan thought silently, "But, the measurement of geometric data we carried out on the earth or Mars No abnormalities were found.”

As long as this one argument can be proven. That is, as long as people really discover the changes in pi or the sum of the interior angles of a triangle compared with previous data through measurement. People can truly prove this, and can calculate the angle of space curvature through the numerical differences that cause specific changes, and then calculate the perfect space model around the earth at this moment through Roche geometry. If this can be done, then the mystery of the disappearing stars will be solved.

"But we still don't have any evidence." Zhao Lan shook his head, put aside these thoughts in his mind, and continued to read the information.

Li Yunfan continued to write in this information: "After confirming this, I immediately guessed that this should be a piece of Lobachevsky space in our universe. In mathematical calculations. Lobachevsky geometry. All theorems have been perfectly verified in this space, and all experimental and observational data tell the difference of this space. I don’t know where this strange space comes from, and how it was born. - It may have been born in the infinite depths of the universe, due to wars between some super civilizations or some special physical processes in the cosmic environment. Who knows - I don’t know when it was born. It may It has been in drifting motion, floating in the endless universe for tens of millions of years before it drifted into our solar system, and was finally discovered by me by a very accidental opportunity."

"Roche space is not the same as normal space. According to this principle, spacecraft and mechanical equipment suitable for normal space should not be able to exist in Roche space. The simplest example is that due to the change of pi, normal space could exist in the past. The running balls or bearings may become less rounded in Roche space. The friction will also increase greatly, eventually leading to mechanical damage. However, through my personal experiments, my spacecraft can still operate normally in this area. Running in a strange space. I guess this is probably because the spatial data changes are too small, and our current mechanical technology is far from reaching such accuracy, so it will not cause observable effects on us. Influence."

Zhao Lan believes that this guess is very logical. This is like a child casually spelling out a triangle with three wooden strips. Because the triangle spelled out with three wooden strips is originally inaccurate, even if the sum of the interior angles of the triangle is adjusted to 181 degrees, it It probably won't have any impact on this triangle.

The mechanical technology of human civilization and the mechanical precision it can achieve are, to a certain extent, similar to a child casually piecing together a triangle with three wooden sticks. There is actually no essential difference between the two. Therefore, changes in pi and many other spatial data did not have any direct impact on the spacecraft Li Yunfan was riding at that time.

"The real existence of Roche space seems to imply the feasibility of space curvature navigation. After all. If light can pass directly over certain space folds without completely traveling along the space - it is this reason that leads to the existence of Roche space. When in space, the phenomenon of distant stars disappearing abnormally - then we humans should also be able to use technological means to create spacecraft that can cross the folds of space. This seems to point out a way for human civilization to create faster-than-light spacecraft."

"I and the team of scientists I led were very interested in this. So we began to focus our scientific research efforts on this aspect and went all out to study this strange space."

The written narrative record left by Li Yunfan ends here. What follows is a lot of mathematical model descriptions of the space, descriptions of physical properties, some conjectures, and many calculation processes. Although Zhao Lan also has some knowledge in this field, he cannot understand these calculation processes with that knowledge. So Zhao Lan doesn't understand these things very well.

But even with Zhao Lan's scientific literacy, Zhao Lan can also see that...these calculation processes are very profound and complex, and each step is connected naturally and logically. Such a piece of information, even if you want to falsify it, requires extremely advanced professional knowledge as a basis. Ordinary people, or ordinary scientists, cannot make such a fake even if they want to.

Zhao Lan went through these calculation processes, and then saw that the author of the subsequent research records changed from Li Yunfan to Rodriguez. Obviously, after Li Yunfan disappeared, the research on this strange space did not stop. Under the leadership of Rodriguez, this team of scientists, who were outside the sight of the human government, continued to study it.

Zhao Lan naturally knew where Li Yunfan had gone. A few months ago, when Li Yunfan was piloting his Sylvia spacecraft to return to Earth, perhaps due to the impact of the final explosion of Eta Carinae, Li Yunfan inexplicably traveled from this universe to another. There was nothing in the universe except darkness, and Li Yunfan was trapped there, unable to escape...

Subsequent records written by Rodriguez recorded some of the research results of their team of scientists on this strange space after Li Yunfan disappeared. The most important record is that they discovered that since the supernova explosion of Eta Carinae, the spatial curvature of this strange space has begun to increase abnormally for unknown reasons, and the volume has also begun to expand rapidly, even covering the entire earth. Inside. Moreover, the structure of this strange space has undergone more complex changes than before. The team of scientists led by Rodriguez is intensively calculating and observing the impact that this change in the strange space may have on the earth. However, So far, they have found nothing concrete.

The team of scientists led by Rodriguez did not know what impact this strange space had on the earth. Zhao Lan, a member of Research Institute 105, knew very well. Distant celestial bodies continue to disappear abnormally, and the distance between the observable disappearing celestial bodies and the earth is getting closer and closer... This is the most intuitive manifestation of this influence.

The closer the observable abnormally disappearing star is to the Earth, the greater the curvature of the space in which the Earth is located. When the curvature reaches a certain level... maybe it will be like what happened to Li Yunfan. The passage between the two universes will be opened, and the earth will fall from this universe into the completely empty universe. , has been blocked by darkness and loneliness since then, and human civilization will be completely cut off when it goes into space and enters the interstellar era. Human civilization will be trapped and die there after exhausting all the resources of the earth...

The scene seen from the perspective of the earth is that the stars in the sky disappear one after another. In the end, there will no longer be any bright spots in the sky. The night sky of the earth will completely turn into darkness, and there will be no more bright spots in the human field of vision. No stars can be seen...

This strange space is not just a space. It is a bottomless abyss that is enough to collapse a planet and make the entire human civilization become extinct in despair. It is a sharp sword hanging above the heads of all mankind.

Facing this possibility, Zhao Lan felt a little shuddering. (To be continued ~^~)

PS: The third update~