The latest observations tell Xiao Yu that the star's orbital state is not stable.

Generally speaking, in star systems with planets, the orbit of the star as the host star is unstable. For example, the axis of rotation of the Sun is not a straight line through the center of mass of the star, but has some deviations.

To use a simple analogy, take a piece of paper, cut out a circle, and then use a pen to penetrate the paper, of course, not to pass through the center of the circle, but to choose a place that deviates from the center of the circle, and then use the tip of the pen as the axis and start to rotate.

The star rotates like a rotating piece of paper.

The reason for this phenomenon is actually very simple, that is, the gravitational perturbation from the planets, which makes the system tend to develop into a binary star system, so that the axis of rotation of the main star deviates from the center of mass. In fact, by measuring this gravitational perturbation phenomenon, humans in the age of Earth discovered hundreds of exoplanets.

But there was a question that made Xiao Yu very puzzled. Because, within 20 billion kilometers around this star as the center of the sphere, Xiao Yu did not find any stars with considerable mass.

That is, there is no star that can cause the star to be rotate biased.

Xiao Yu quickly informed the participating scientists of the results. This phenomenon immediately got scientists talking.

"First of all, it can be determined that this peculiar phenomenon is not caused by black holes. Although black holes cannot be directly observed, they can be easily detected through gravitational lensing. Xiao Yu said, "Hundreds of thousands of probes belonging to us have searched this galaxy all over the world, but they have not found any shadows of massive stars. So...... What's going on? ”

Xiao Yu couldn't figure it out. This star, like a maverick madman, always exhibits some inexplicable properties. Without the rest of the astral gravitational perturbations, will it appear to be offset by the axis of rotation? In other words. Since it has shifted its axis of rotation, it means that it must have been affected by the rest of the stars, but where is that star? weishenme can't see or feel it yourself?

Xiao Yu had a faint intuition that this phenomenon was probably related to the strongest defensive weapon named "Shinshijie" that was said in the last words of the Torol civilization.

Xiao Yu couldn't help but start thinking about the meaning of the simple word "new shijie".

"Is the shift in the axis of rotation of a star due to its own stellar activity?" One of the scientists stood up and expressed his opinion, somewhat uncertainly.

"No, it can't be." Xiao Yu denied: "At this moment, there are at least three thousand probes gathered around that star, and its every move is under my control. At this moment, its stellar activity could not have caused such a significant impact. Hmm, let me do the math with gravitational perturbations...... Calculations show that at a distance of four billion kilometers, a star with a mass of about zero three times the Sun's mass is pulling it. Wait...... Wait a minute! The star's axis of rotation is gone! It's back to normal! ”

It was at this time. The probe once again reported a piece of news that shocked Xiao Yu.

"How so? How could a star with a mass of 0.3 times the mass of the Sun disappear in an instant? This. This is not logical. "Look at your observations. Xiao Yu was inexplicably surprised.

The rotation of a star follows the principle of conservation of angular momentum, and if there is no external perturbation, its axis of rotation will inevitably pass through the center of mass. At this moment, this star is showing such a state. A while ago, its axis of rotation was somewhat offset, and now. I recovered in a very short time.

The fact that a group of scientists looked at each other has proven that the scientist's explanation that the star's axis of rotation is shifting due to the star's own activity is incorrect. Maybe stellar activity could really cause the axis of rotation of the star to shift, then. Could it be that stellar activity will fail to correct the axis of rotation again?

This is illogical and unscientific.

"Look, look, the axis of rotation shift phenomenon has appeared again!" Xiao Yu, who received the report again, was even more surprised in his heart, and immediately reported the news.

"No, something is wrong!" Luca IV said, "Master, have you noticed that this time it has a different axis of rotation offset than the last time. According to this offset rate, there is about a star with a mass of 0.5 times the mass of the Sun at this moment, pulling it at a distance of 12 billion kilometers! ”

"What the hell is going on!" At this moment, Xiao Yu was very depressed. Because Xiao Yu found that the scientific and technological strength and knowledge reserves that he was proud of were completely clueless when faced with such a thing.

"This star system is really weird, and it's basically certain that the so-called new shijie, and the remnants of the Torol civilization, are hidden somewhere here, but we can neither see it nor feel it, it's haunted like a ghost."

"There was a gap of about ten seconds between the two occurrences of the axis of rotation. According to our calculations, one is an orbit at a distance of four billion kilometers, the other is an orbit at a distance of one hundred and twenty billion kilometers, and the distance between the two orbits is eight billion kilometers. Eight billion kilometers! Ten seconds! One second is 800 million kilometers, which, this is more than 2,600 times the speed of light! How is this possible! In the conference room, there was an exclamation.

This exclamation caught the attention of all the scientists in the room, and then, after some simple calculations, they each came to the same conclusion. The atmosphere in the conference room was instantly solemn.

"I don't know if you still remember the Taihao civilization from the Big Magellanic Nebula." Xiao Yu's tone was a little bitter, "It took the initiative to find the Sweeper Civilization for a decisive battle, and then found that its strength was not as strong as the Sweeper Civilization, and as a result, it sent out a distress signal, and the distress signal was received by the Guardian Civilization, and the Guardian Civilization then issued a cosmic summoning order, calling on all the civilizations in the galaxy that have the strength to participate in the war to go together to encircle and suppress the Sweepers." ”

"I remember it very clearly." Lukka III took over the conversation and said slowly, "At that time, we Luca were the only race that followed your master. I still remember the contents of the Galactic Convocation Order of the Guardian Civilization. It roughly means that all civilizations that have the ability to travel more than 100 times the speed of light can go to the war site on their own, and if they can't, they can go to the gathering point of the Guardian civilization, and the Guardian civilization will be responsible for transporting them. ”

"This message means a very clear reality." The next words were uttered by Luca Four, "From this information, we can know that even for the old strong sixth-level civilization and the guardian civilization, a hundred times the speed of light is a big hurdle, and in the same way, the speed of the guardian civilization will definitely not exceed a hundred times the speed of light." But...... The speed of this thing has reached more than 2,600 times the speed of light, what does this mean? ”

"Speed means technological prowess, and I know that." Lukka II said, "To be sure, even the Sweeper civilization is nowhere near this speed. In fact, in our speculation, the Sweeper civilization can reach a speed of one hundred and fifty times the speed of light, which is enough to shock people, more than two thousand six hundred times? This, this is only possible if it has reached the level of seventh-level civilization. But...... If the Torol civilization was really a seventh-level civilization, how could it be so embarrassed under the pursuit of the Sweeper civilization? Even if you can't beat it, if you run, who can catch up with it? ”

Two thousand six hundred times the speed of light is a very terrifying speed, which is a height that Xiao Yu does not even dare to look up to. In Xiao Yu's inference, only seventh-level civilizations have the ability to sail the river system, and the most important limitation is the problem of speed. Even at the speed limit of the Sweeper's civilization, one hundred and fifty times the speed of light, it would take more than fifteen thousand years to travel from the Milky Way to the Andromeda Galaxy. It may not be a long time, but the lack of supplies during the long journey is the deadliest.

The problem of resupply cannot be solved by carrying enough supplies. Xiao Yu had been confused before, how could supply become a problem? With the technological strength of the Sweeper civilization, Xiao Yu believed that they were fully capable of carrying a star on their journey. So, isn't one star enough for them to consume?

But with the development of science and technology, after thoroughly understanding the principle of curvature navigation and the energy consumption rate, Xiao Yu knew that he was wrong. The reason is very simple, the supply also has mass, the greater the mass, the more energy it consumes to unfold the curvature voyage, how much energy does it take for a star to sail with a curvature of 150 times the speed of light?

Even if all of the star's mass were converted into energy, it would not be able to sail in curvature from the Milky Way to the Andromeda Galaxy.

Then there seems to be only one way to sail the river system, and that is conventional navigation. In a subluminal state, it took up to three million years to cross from the Milky Way to the Andromeda Galaxy. This method can really achieve river-level voyages, but the consumption along the way is also a problem, whether it can be reached, and whether it is a living creature or a corpse of a creature after arriving cannot be guaranteed.

And what if the speed of the voyage could reach 2,600 times the speed of light? This means that it will take less than 900 years to get from the Milky Way to the Andromeda Galaxy. Nine hundred years is fleeting, and it's really not a long time.

However, how could the Torol civilization have such a strong strength? (To be continued......)

PS: The third update to ...... Today's fourth shift will be put tomorrow, which means that tomorrow will also be the same as the third watch.

I wonder if this counts as an outbreak? Uh, whether it counts or not, Rainbow is cheeky and begging for a fluttering ...... Vote for the best work, vote for the battleship!