At this moment, Xiao Yu is still in the long process of searching. Xiao Yu didn't have a clear idea of where these fifth-level civilizations went. Because these fifth-level civilizations walked very cleanly, they did not leave any information that could indicate their whereabouts.

Xiao Yu faintly felt a little bit of conspiracy, but he couldn't get more information.

So Xiao Yu could only continue to search, hoping to find some clues in the stations of the rest of the civilizations. Xiao Yu can only do this. The vast sea of stars, the boundless universe, it is really too easy to hide, and it is too difficult to find a specific object.

After leaving the Pastoral Civilization Residency, Xiao Yu embarked on the road to the Lyra Civilization Residency. This is another voyage, this is a long journey of more than 4,600 light years, even at Xiao Yu's speed, it will take almost a hundred years to reach it.

But this time the journey was not smooth. Halfway through this voyage, Xiao Yu encountered an unexpected event, that is, a supernova exploded.

The supernova exploded more than 3,000 light-years away from Xiao Yu, and the whole thing was blown to pieces, leaving no white dwarf, no neutron star, and no black hole. In this violent explosion, all of its material was completely dispersed into space, turning into a spreading planetary nebula.

This is a very rare cosmic spectacle, an unstable supernova explosion.

At a distance of more than 3,000 light years, if it was an ordinary supernova explosion, Xiao Yu could actually ignore it. After all, this distance is too far, and Xiao Yu's current technology has developed to a certain extent, at this distance, resisting the invasion of explosive energy is nothing to Xiao Yu.

But the instability of the supernova exploded. It's no ordinary supernova explosion. The energy it released was too strong, so strong that the energy it burst out could still affect Xiao Yu's fleet after a long journey of more than three thousand light years. There was no way, in order to avoid unexpected losses, Xiao Yu had no choice but to temporarily separate the fleet from the curvature space, put the planetary battle stars in front, and stop all the warships behind the huge body of the Earth, and with the help of the strong defense of the Earth, he resisted this disaster.

"Instability vs. supernova...... This is the first time I have encountered it since I entered the Cosmic Void. Something like this is really rare. Not. The data I observed this time was enough for me to study for a long time. ”

Looking at the point of light in the distance that suddenly increased in brightness, even brighter than the entire galaxy, Xiao Yu was secretly happy in his heart.

That's right, instability is such a powerful ability for supernovae. At the time of instability against supernova explosions. Any powerful existence will be overshadowed, not even a single river system can match it.

Instability is a very extreme supernova explosion phenomenon for supernovae. It can only occur on massive stars with 130 solar masses to 250 solar masses. Xiao Yu has a deep understanding of such supernovae. In Xiao Yu's theory. The main reason for this supernova explosion is that the gamma rays in the core of the star are too strong, and the gamma rays that are too strong will collide with the nucleus to produce free electrons and positrons, in which case the pressure at the core of the giant star will be reduced. Causes a local collapse of the star. Then a large number of rapid, uncontrolled nuclear burns that blow the entire star away.

Note that unstable supernovae do not leave anything such as white dwarfs. Neutron stars or black holes or other dense cores. Because the energy of the explosion is so intense, the entire star will be completely blown away in such an explosion, leaving no chance for the formation of these dense stars. This is the biggest difference between it and a normal supernova explosion. Although a type Ia supernova does not leave any traces, it occurs on a white dwarf, and its power and scale cannot be compared with that of an unstable supernovae.

So you can imagine how powerful the explosion of instability on a supernova will be. Because instability is too rare for supernovae, even Xiao Yu hasn't seen it a few times. When he was on Earth, Xiao Yu had seen two things that were suspected to be the debris of an unstable supernova explosion, and it was really Xiao Yu's first time to really witness the entire explosion process.

"Poor thing, it is estimated that with this unstable pair supernova as the center, all low-level creatures within a radius of a few thousand light years will be killed." Xiao Yu sighed secretly, "If such a violent explosion is encountered in the Earth Era, then all human beings on the earth will die, and the ecological environment of the earth will be completely destroyed." We are really lucky that the earth can develop into the human era. Unfortunately, the Earth was eventually destroyed. ”

From this, we can also see the danger of the universe. Because you never know what kind of crisis you're going to encounter in the next moment. You know, the energy of a supernova explosion travels at the speed of light, so when you perceive that a supernova explosion has occurred on this star, the devastating energy released by it has already arrived at the same time, and you will be killed in an instant, and you will not even have time to react. To prevent this kind of thing in advance, the only way to do this is to use the tachyon detection technology of the fifth-level civilization and take the initiative to detect these stars. But there are so many stars in the universe, how can a civilized Liliang monitor the situation of each star in real time? Even if the method of early screening can be used to monitor only a few stars with the possibility of explosion, how many fifth-level civilizations are there in the galaxy?

"Every civilization is a legend, and every civilization has a wonderful story." Xiao Yu sighed.

After the most intense explosion energy passed, Xiao Yu continued to embark on the journey. Although the instability is wonderful for supernova, it is not enough to make Xiao Yu stop himself.

Xiao Yu can do not care much about an instability and supernova explosion, but some existences can't do it, for example, those Pegasus civilization people who escaped before the tree beast destroyed their capital planet by the former leader of the Pegasus civilization.

They were right in front of Xiao Yu, closer to the exploded unstable supernova, so they were affected more intensely. And their technology is not as advanced as Xiao Yu. The most serious thing is that many of their fugitive fleets are not warships, but ordinary civilian or commercial, as well as industrial ships. The defense of these ships is much worse than that of battleships.

So this time, the sudden and unprovoked disaster caused them huge losses. Nearly half of the spacecraft and people were killed in this disaster, and the remaining half of the spacecraft also suffered serious damage, with engines burning, energy reserves depleted, and precision parts damaged.

During this time of exile, this part of the population of the Pegasus civilization has produced new leaders, as well as various related institutions. The new government quickly assessed the current damage and carried out a series of post-disaster relief projects.

But the current situation really makes him not optimistic.

"I have always believed that any suffering is a tempering of our civilization, and our civilization will eventually be reborn from the ashes and stand at the peak of this universe. I have never wavered in this belief. But now, my faith has been shaken. I'm thinking, weishenme This series of disasters happened to our civilization? We, can we really overcome the adversity in front of us? ”

The new leader, who had just finished an impassioned speech and had succeeded in mobilizing the morale of the surviving people, had returned to his private home with a decadent finish. Looking at the fleet damage report in front of him, he couldn't help but burst into tears.

The reality before him was brutal. Because the damage is so severe, the fleet has lost the ability to continue sailing, so the only way to do so is to find a nearby planet to settle down. However, the Pegasus civilization has not transformed the planet at this moment, the number of people is too small, the number of various mechanical equipment is too small, and there is a fault line in science and technology, and the scarcity of scientists determines that in at least thousands of years, their scientific and technological level will only regress and cannot move forward.

Finding a planet that is suitable for them to live, or that can be suitable for survival with only a simple modification, and then spending their main energy on nurturing offspring, developing education, and increasing the number of scientists as much as possible, this is their only life. And if they are stationed nearby, it means that in order to maintain the survival of the people, their main energy must be focused on transforming the planet, and the cause of education will be delayed.

This delay may be the hope of the entire civilization.

This series of blows has pushed the morale of the new leader to the brink of collapse.

After crying silently for half an hour in the empty room, he stood up, wiped the tears from his face, put his groom in order, and walked out of the room. He was back to the way he had the jewel in his hand, and he couldn't be knocked down by any difficulty.

Before he could tell his assistant what was coming up, he felt a violent tremor, as if there had been an earthquake on the ship. But he knew that there could be no earthquake on the ship.

"What the hell is going on, go investigate and report to me immediately......"

He commanded in a steady voice. Although he was also very frightened in his heart at the moment, he knew that this kind of emotion could not be expressed and could not be seen by anyone. (To be continued......)