Theoretically, Earth's crossing of the asteroid belt is not dangerous.

Although there are more than 500,000 planets in the asteroid belt, these asteroids are evenly distributed in the orbit around the sun between Mars and Jupiter for more than 200 million kilometers, and the average distance between asteroids is more than 300,000 kilometers.

If it's just an ordinary spaceship, you can easily find a safe way to cross the asteroid belt.

But the earth is different, the diameter of the earth is as high as 12,700 kilometers, and the mass is as high as 5.965*10^21 tons, such a huge celestial body through the asteroid belt, enough to cause large-scale disturbances of asteroids within millions of kilometers near the earth's shipping lane.

The journey through the asteroid belt is 200 million kilometers and takes almost two months.

In the meantime, once an accident occurs and an asteroid with a diameter of more than 100 meters falls into the Eurasian continent or the North American continent, it may trigger a large-scale shutdown of the planetary engine.

If the planetary engine is shut down, the acceleration of the earth slows down, coupled with the subsequent chain reaction, what awaits the earth is likely to be a catastrophe.

Not to mention, human beings can only predict the orbit of asteroids with a diameter of more than 500 meters, and a large number of asteroids below 500 meters are difficult to observe.

To this end, the United Earth Government began preparations decades ago.

In order to deal with asteroids, mankind has come up with the most powerful weapon ever - antimatter bombs.

At the time of the construction of the circum-equatorial planetary engine, mankind simultaneously built a circum-equatorial superparticle collider.

It was through this collider that over thirty years, humanity accumulated a considerable amount of antimatter.

Once Earth officially begins to cross the asteroid belt, the space fleet will go out on a large scale to destroy asteroids in their orbit with antimatter bombs that are more than 100 meters in diameter.

As for asteroids with a diameter of less than 100 meters, they can only be resisted by the earth.

The Earth aligns the Southern Hemisphere in the direction of its head, serving as the main impact zone of the asteroid.

Most of the southern hemisphere is dominated by marine environments, and migration has been completed, and planetary engines have not been built, so it is not a big problem to carry asteroids.

In addition, in response to the possible crisis of this operation, the coalition government has also formed an advisory team of top global scientists to provide intellectual support for the operation.

Pang Xuelin was also selected for the scientific advisory team of the operation.

The reason is not the high-purity carbon nanotubes he led the development, although the current creation of carbon-based chips has allowed mankind to build more powerful supercomputers.

The coalition government mainly valued him for his achievements in mathematics.

In the past few years, Pang Xuelin has used the BSD conjecture in the Wandering Earth plane to brush up on mathematics again, and the top mathematician and material scientist are enough to put him in the sight of the top leadership of the Earth Coalition Government.

……

Early that morning, Pang Xuelin woke up from his dream.

Yao Bingxia, who was sleeping next to him, had already gotten up, and could faintly smell the fragrant fragrance left by his wife in the quilt.

Pang Xuelin got up from the bed, washed, brushed his teeth, and then came to the restaurant.

Yao Bingxia was busy in the restaurant wearing an apron, with clear porridge, small pickles, steamed buns and other breakfasts on the table.

"Brother Xiaolin, you're up, and there are two fried eggs, it'll be fine later!"

Soon, Yao Bingxia came out with a plate containing two poached eggs, and the two sat together and had a warm breakfast.

After breakfast, Yao Bingxia found a neatly ironed tie and blazer for Pang Xuelin from the room, put them on him, and handed him the suitcase that had been prepared a long time ago, and said: "This time I went to the headquarters of the United Government, you have to be careful on the way, now those spaceship factions outside are starting to make a fuss again, saying that the earth crossing the asteroid belt is a huge mistake, and mankind will pay a heavy price for it, I heard Brother Gao say that the spaceship sends a terrorist organization." Wings of the Stars may be able to attack the scientists who went to the Coalition Government Headquarters to support the operation......"

Pang Xuelin smiled and said: "Don't worry, it's just some clowns who jump off the beam, and it won't take long to jump, besides, the routes we chose are all confidential, they don't know which flight we are taking, even if they want to, they can't find the target!" ”

Yao Bingxia said: "It's best to be fine, I didn't take care of me when I went out for three months this time, but don't forget to eat when you are busy with work like before!" ”

"Got it, my little housekeeper!"

Pang Xuelin reached out and scratched the bridge of her nose.

Yao Bingxia glanced at him, handed the briefcase to Pang Xuelin, went up and hugged Pang Xuelin hard, and then stood on tiptoe and pecked Pang Xuelin on the lips, and said with a smile: "Okay, it's not early, let's go quickly!" ”

"Then I'm leaving!"

The two said goodbye.

Pang Xuelin came out of the house, and the soldiers downstairs who were responsible for guarding him had been waiting for a long time.

A man with short hair and an extremely capable look stepped forward and saluted: "Professor Pang, hello, I am Wang Lei, captain squadron leader of the Earth Defense Force, and I am ordered to carry out the task of escorting you. ”

Pang Xuelin was slightly stunned, he had come to the wandering earth world for so many years, this was the first time he had seen a famous character in a movie.

Wang Lei is one of the protagonists of the movie, and in the end, in order to protect the heroine Han Duoduo, he sacrificed the Sulawesi No. 3 steering engine.

In the movie, his wife and children are in the Jiangcheng No. 1 dungeon, and they are finally killed because the flint that restarted the Jiangcheng No. 1 engine was not delivered in time.

Pang Xuelin took a closer look, and Wang Lei's subordinates in the movie, the slipper, Gangzi, Zhou Qian and others who had appeared were also there.

"Captain Wang, I've worked hard for you this time!"

Pang Xuelin shook hands with Wang Lei and said.

"It's not hard, it's not hard, Professor Pang, it's our honor to escort you!"

Wang Lei looked a little excited, and there was even a hint of admiration in his eyes when he looked at Pang Xuelin.

In Jiangcheng No. 1 dungeon, Pang Xuelin is a well-known figure.

This is not only because of his identity as the vice president of Jiangcheng University, but more importantly, as the inventor of high-purity single-walled carbon nanotubes, Pang Xuelin successfully solved the core problem of carbon-based chips, and is one of the promoters of the new generation of information revolution of mankind.

Therefore, for Wang Lei and them, seeing Pang Xuelin is like seeing a legendary character.

"Alright, it's almost time, let's go!"

Under the leadership of Wang Lei, the group went straight to the underground hangar and boarded a transport plane.

The transport plane was then pushed onto a large lift platform and sent straight to the ground airfield, after which the aircraft engine was activated and flew directly to Siberia.

The Earth Engine General Control Room is located in an underground city twenty kilometers deep underground in Siberia, which is also the headquarters of the United Earth Government.

Since the Southern Hemisphere is the direction of the Earth as it crosses the asteroid belt, the Northern Hemisphere, which is full of planetary engines, is relatively safe, and the closer it is to the North Pole, the lower the probability of being hit by an asteroid.

The United Earth Government in Siberia is one of the safest areas to visit.