Before the supernova explosion finally occurs, the extremely penetrating neutrinos can be the first to escape from the interior of the white dwarf and take on some different characteristics than they normally would. Thus, by observing neutrinos, it is possible to predict supernova explosions in advance.

Of course, even if it can be forecasted, it will not be very long, only a few hours at most.

At this moment, the neutrino telescope in the Dimension A galaxy observed the signs of a supernova explosion in the vast deep space, and then transmitted it to Chen Yue, 0.6 light-years away, in an instant through ultra-distance communication technology.

After that, Chen Yue immediately found the optical counterpart of these signals and pointed the telescope at it.

Eventually, a name appeared in Chen Yue's mind.

The galaxy that is about to explode with a supernova is called IK Pegasus.

- No, that's probably not accurate. With Pegasus IK about 150 light-years from the solar system and about 162 light-years from the Wangliang Samsung and Dimension A galaxies, it takes about 162 years for neutrinos very close to the speed of light to be transmitted from Pegasus IK to the Dimension A galaxy and thus detected by neutrino telescopes.

This means that the real supernova explosion actually happened more than 160 years ago. At this moment, it is just the particles that carry the information of this supernova explosion have arrived here.

But...... How so?

Pegasus IK is a binary star system, one of which is a subgiant with a blue-white surface color, and the other is a white dwarf, which Chen Yue is very clear. The subgiant star, although in the second half of its life cycle, is far from becoming a red giant and thus accretion by the companion star. And without enough foreign material, a supernova explosion is impossible.

It was precisely because it had no risk of supernova explosion for millions of years to come that Chen Yue did not pay much attention to it. Chen Yue believed that the rest of the civilizations located in this star field would definitely not make such preparations.

Why...... That subgiant star suddenly expanded? This is not explained by natural evolution and natural phenomena.

What's going on there in that galaxy?

Chen Yue couldn't think clearly, couldn't figure it out. However, this question can be thought about later, and the top priority is to deal with this emergency.

Wang Liang's Samsung and Dimension A galaxies are up to 162 light-years away from the constellation Pegasus, IK, or about 1,540 trillion kilometers. At such a distance, it seemed unaffected by the explosion – which is often the case, but this one was no ordinary thing.

That's a supernova explosion! One of the most intense physical processes in the universe!

The entire Milky Way galaxy is made up of about 200 billion stars. At the time of the supernova explosion, its brightness was comparable to that of the entire Milky Way's 200 billion stars combined!

A supernova explosion releases as much energy as a star like the Sun does over its entire lifetime!

Stars like the Sun can burn for about 10 billion years. All the energy radiated in 10 billion years will burst out in just a moment, how terrifying will it be?

Even if Chen Yue was already a solid third-level civilization at this moment, even if he placed the human warship with the strongest defense power at the moment a few trillion kilometers away from the supernova explosion site, there would be no doubt that it would be vaporized in an instant and completely disappear from the universe.

You can even make an analogy: the largest yield hydrogen bomb made in the age of the earth, the Tsar Bomba, has a yield of 50 million tons of standard explosives. The explosion experiments carried out at that time are said to have moved the Eurasian continent by a few millimeters.

The distance between the Earth and the Sun is 150 million kilometers.

Which one would look brighter if such a bomb was placed in front of a person and then detonated, or a supernova explosion that occurred at the position of the sun?

Judging by conventional thinking, ordinary people would probably choose Tsar Bomba. After all, the Tsar Bomba is right in front of you. No matter how powerful the supernova explosion is, the distance is 150 million kilometers, which is too far.

But...... Calculations show that even a supernova explosion at a distance of 150 million kilometers would be millions of times brighter than a Tsar Bomba placed close to a person's eye.

A supernova explosion is just that. Even Chen Yue, who was more than 160 light years away, had to face it with all his might.

At this moment, in the room, Lu Wente and Hongshan were still waiting for Chen Yue's answer. They didn't know how much information Chen Yue had received, how many calculations he had made, and how many decisions he had made in his heart.

The robot representing Chen Yue stood up and said solemnly: "Now that the galaxy has suffered such a huge change, it is too risky to continue to occupy the Southern Star or the Blue Moon civilization. I have decided that human civilization should also be hidden and develop slowly.

But at this moment, there is an unexpected incident. As a result, even if there is no 'level 4 and above civilization is suspected to have disappeared', I will no longer choose to enter the Southern Star or Blue Moon civilization. ”

"Oh? Emergencies? ”

Both of them were shocked at the same time.

"Pegasus IK." Chen Yue said slowly: "I just observed that the white dwarf star had a supernova explosion. It is expected that in another half a year, the explosive energy will reach the Wang Liang Samsung system where we are at the moment. ”

"What?! Supernova explosion! That's impossible! No way! ”

Hongshan and Luvant stood up at the same time full of shock, and their tones were a little incoherent: "How is this possible?!" It's a very stable galaxy, and even if it explodes, it will be at least a million years from now! ”

"I suspect it's because of the influence of super civilization. Here are my observations. ”

Chen Yue presented some general data in front of the two. Even if they are not scientists, they can understand it.

At the same time, the two of them also knew in their hearts that Chen Yue had no reason to deceive them.

Seeing these data, the two of them slowly shortened their breath, and finally sat down.

Chen Yue said slowly, "It seems that your guess that the galaxy has returned to calm is wrong. At least this time, it will almost certainly be because of the influence of advanced civilizations, otherwise a supernova explosion would not have happened. ”

Chen Yue did not change his decision to hide because of this. In any case, the inference that something great has happened in the galaxy that I don't know about is true.

"With the IK-Perusi galaxy as the core, all galaxies within a radius of 500 light years are no longer suitable for the survival of civilizations of level 3 and below. For the sake of the future of human civilization, I have decided to go all out to collect resources in Wang Liang's three-star system, build a spaceship, and then set sail to escape towards the edge of the galaxy, farther away from the IK-system in the constellation Pegasus. ”

Hongshan and Luwente's bodies slowly trembled, and cold sweat continued to drip down.

In the face of this great catastrophe, which can be called a peerless natural disaster, all the disputes and calculations in the past seem to have become worthless in an instant.

Suddenly, Luvent and Red Mountain moved together. The two of them slowly stood up, and then knelt in front of the robot representing Chen Yue one after the other.