Overhead, the sun was blazing, as huge as a giant wheel, adding infinite light to the dark space, and the light reflected in Haige's eyes, but it was condensed into blood droplets in a cloud of blackness, seeping into the mind and drowning hope and solidifying thoughts.

He took a deep breath, trying to prove that he was alive in this way, but instead the breath blocked his chest, making him feel like he was dying.

The reason why Wedel arranged for him to enter the shadow illusion is revealed, what kind of chicken game? It's all his wishful thinking, and that man really wants to warn the earthlings that the sun is almost finished, and at the same time, he will drag his friends around it to be buried with him. And Wedel himself came from the deadly black hole......

But there's one more thing that Haige can't figure out: why would Wedel tell him, an ignorant orphan, of the impending doom on Earth, and no one else? The Global Federation of Science and Technology is full of talents, and the aliens don't really see those scholars who are full of wealth as weak humans on Earth, and he Haige is the only strong one, right?

The Sun, which has stood in the center of the solar system for 5 billion years, is under serious threat to life at this moment, and it is the parent star that gave it life, called Wedel-U......

Haige stared gloomily at the burning fireball, realizing for the first time in her life that sunlight was sometimes more desperate than darkness, and that moment was when she realized that it was about to go out.

He suddenly realized something, and said to the robot waiter who was standing with his hands down, "If I guess correctly, the sun you let me see is still in a healthy period, but it is enjoying the last peace. Soon it will be captured by the black hole killer crawling directly below, and it will start to resist, right? ”

In the successful brain nucleus, the part that controls emotions is active, and there is no mechanical expression on his face, and vivid sadness appears.

He drooped the corners of his eyes and said, "After the star consumes the hydrogen fuel in its body, the helium fuel will replace the hydrogen fuel. Even though the energy supply is greatly reduced at this time, it is also guaranteed that the star will not die out in a short time, but will explode into a red giant at some stage. This process usually lasts for hundreds of millions of years for an intermediate-mass star, the Sun. But the reality is cruel, the black hole created by the Wedel-U star, hey, let's call it the U star black hole, the expansion of the U star black hole has greatly shortened this process, I think it is not an exaggeration to describe it, it is reduced to a shorter time than a moment in the universe. ”

"I still don't quite understand," Hai Ge said, "Even if the mass of the Sun decreases and the attraction increases rapidly, the consequence should be to swallow the four terrestrial planets, not to stop them all." How does the sun do this? Does this involve the tidal forces and tidal locking you mentioned? ”。

Cheng Cheng replied: "The sun depletes its internal nuclear energy, which means that its mass is reduced. But suppose the Earth is lucky enough to be affected by the thrust that erupts when its two brothers ahead of it, Mercury and Venus, are destroyed, and automatically changes its orbit and escapes outward. If this happens, it is possible that the Earth will be spared the fate of being bombarded by a helium flash. Unfortunately, the sun had a tidal interaction with the earth in advance, so the earth was locked by the tidal force of the sun and was doomed to doom. Even if the planet is not engulfed by the sun for a while, the water sources on the planet's surface have begun to dry up, and the water vapor has volatilized into space, and as a result, the city you once knew has become the pitiful appearance it is today. ”

"Tidal force! Hateful tidal force! Could it be that in the almighty universe, there is no way to defeat the tidal forces, defeat the cosmic black hole, save the sun and the earth, and other celestial bodies in the solar system?! ”

Hai Ge was furious, his two fists clenched tightly, and he wanted to swing out with a long fist and smash the hateful black hole monster, and then the sun was saved, and the earth escaped.

But what kind of power is tidal force? Why is it so powerful that it can put the earth in a desperate situation and watch itself go to the end?

Chenggong asked him: "Do you know why no matter when or where you stand on the earth, earthlings can only see the front of the moon?" ”

Haige shook his head.

"It is precisely because of the action of the Earth's tidal force on the Moon, and between the two, a tidal locking effect occurs," Success said. In the earth's oceans, the sea water is constantly vibrating due to the distance from the gravitational source, and this force difference is called the tidal force. The tidal force causes the cycle of the Moon's revolution around the Earth to coincide exactly with the period of the Earth's rotation, thus locking the Moon to the front forever. However, the effect of the gravitational force is reciprocal, and while the Earth locks on to the Moon, it is also affected by the Moon's tides, thus reducing the speed of rotation. ”

"So the Earth is tidally locked by the Sun, which means that it will take a whole Earth year for the Earth to rotate or revolve around the Sun?" Haige asked in a daze.

Success shrugged and said, "I'm sorry. ”

Hai Ge's eyes darkened, "In other words, the situation is even worse than I thought?" ”

"In fact, the interaction between the gravitational force between the sun and the earth has extended the period of the earth's revolution by dozens of times, which is indeed equal to the time of the earth's rotation." ”

"Dozens of times ......" Hai Ge counted with his fingers in horror: "This means that if you want to see the sun set in the wasteland, you will have to wait for decades......"

Chenggong looked at him with complicated eyes, as if he had forgotten his identity as a robot waiter. Haige sensed the sympathy from the nanobots, and felt weird, so she looked back at him in the same way.

At this time, Haige thought paradoxically: "AI robots are created by humans, but they enjoy a much greater survival advantage than organic creatures, which is very unfair!" Success will not die, even if the helium flash explodes and the earth is blown into meteorite blocks, he can still wander in the universe, as long as the brain core is not submerged in the water. If only the vitality of human beings could be so strong! In fact, even the U-star people who made Wedel's sense of superiority burst into flames, didn't they also collectively perish when the planet was destroyed. ”

But after thinking about it deeply, he felt relieved. In fact, the strength of organic life does not need to be compared with that of robots. No matter how advanced AI intelligence is, it is always the crystallization of human intelligence, and their existence itself proves the excellence of the human brain.

As soon as he figured it out, Haige's hard-hearted attitude softened and said to Chenggong, "Thank you for explaining to me how the sun and the earth interact in the universe. If it weren't for your answers, I'd have always suspected that Wedel had bad intentions for me. I still can't guess what he wants to do, but at least I'm not so confused. ”

Successfully regained his smiling and affectionate face, and lost no time in asking: "This is really a heart-warming compliment, and the success is very moving." So my dear sir, are you satisfied with my service? If you are satisfied, please say 1, and if you are not satisfied, please say 2. ”