Liu Xin said: "Professor Pang, since this is the case, please elaborate on your thoughts!" ”

Pang Xuelin said: "In fact, this method is not difficult to say, the main reason why it is difficult for us to detect asteroids with a diameter of less than 500 meters is that these asteroids have a low apparent magnitude (the larger the apparent magnitude value, the darker the brightness, for humans, the sun's apparent magnitude is the highest, -26.7, followed by the full moon, which is -12.6), the ability to reflect sunlight is weak, and the reflection of radar waves is not strong. But we can try to enhance the signal feedback ability of these asteroids, for example, we can create large-scale artificial interstellar dust clouds in the universe of 10 million kilometers near the earth's shipping lanes, these interstellar dust clouds have strong electromagnetic wave reflection characteristics, when the asteroid passes through the interstellar dust cloud, it will feedback a strong electromagnetic wave signal, and the signal value of an asteroid with a diameter of 10 meters can even increase by more than 100 times. ”

"In this way, as long as an asteroid passes through the interstellar dust cloud, it can leave a clear trail in the universe, just like when a person walks on the snow, he will leave a clear footprint, so I call this project a snow project!"

Pang Xuelin's voice fell, and the entire conference room was quiet for a while, and soon fell into a commotion.

No one expected that Pang Xuelin would come up with such a wonderful plan.

Leaving aside the question of whether this plan is feasible or not, this idea alone is very valuable for discussion.

For a time, everyone was in heated debate about the feasibility of this plan, some for it and some for it.

Liu Xin and Seedorf glanced at each other, and a look of surprise flashed in their eyes.

Liu Xin had to pat the table and said, "Everyone, be quiet, Professor Pang, I have a few questions for you about this plan." First, and most importantly, the materials you mentioned to make artificial interstellar dust clouds, do we have such materials? Second, the Earth's voyage through the asteroid belt is close to 200 million kilometers, and the most dangerous section is about 50 million kilometers. Thirdly, how to spread these materials over such a wide space and how many spacecraft would need to be deployed, have you considered these questions? ”

The conference room was quiet again, Liu Xin had no doubt about the key to the snow project, and everyone focused on Pang Xuelin.

The plan he proposed is indeed ingenious, but the earth will pass through the asteroid belt in half a month, and whether human beings still have the time and ability to carry out such a huge project is indeed a big question.

Pang Xuelin smiled slightly, and was prepared for these questions.

"Secretary-General Liu, on the first question, I can tell you unequivocally that we have such a material, that is, metal-based graphene nanocomposites, which have a strong electromagnetic wave reflection effect, and can be mass-produced in Jiangcheng Dungeon, as far as I know, the reserves of the factory have exceeded 200 tons. My idea is that we can wrap this material in a hydrogen bomb with a yield of 100 million tons, and as long as the hydrogen bomb is dropped to a predetermined location, after the hydrogen bomb explodes, each ton of metal-based graphene nanocomposites can form at least an interstellar dust cloud with a diameter of more than 100,000 kilometers. In addition, we do not need to arrange this dust cloud with the radius of the Earth's shipping lane, because the asteroid orbit in the asteroid belt has a one-way consistency, we can arrange such an interstellar dust cloud on the side of the Earth's shipping lane. The only question now is whether we have enough hydrogen bombs and enough vehicles to deliver them to the intended location. ”

Liu Xin's eyes narrowed slightly, he didn't expect that Pang Xuelin had even considered the specific implementation plan of this project.

Liu Xin said: "This question should be answered by General Bell Arnold, the commander of the Space Fleet." ”

As he spoke, Liu Xin turned his gaze to the middle-aged man in the space fleet uniform sitting beside him.

Arnold said: "Professor Pang, I can tell you that our military has enough vehicles to deliver the metal-based graphene nanocomposites you mentioned, as for the hydrogen bomb problem, I think the flint is a suitable option, as long as our flint is slightly modified, it can be directly turned into a super hydrogen bomb with a yield of more than 100 million tons." Over the years, we have stockpiled more than 20,000 flints to prevent problems with planetary engines, and a small part of them can be used to meet the needs of snow engineering with a small modification. ”

Pang Xuelin couldn't help but be slightly stunned, flint is a black technology that only appeared in the movie "The Wandering Earth", which is used to restart the planetary engine.

It's just that it doesn't make it clear what the flint is in the movie, and some people on the Internet speculate that it should be a thermonuclear bomb used to ignite a refusion planetary engine.

Pang Xuelin didn't expect that this thing was really a hydrogen bomb, and the yield exceeded 100 million tons, which was twice as large as the Tsar yield of the nuclear bomb dropped by the former Soviet Union at the Novaya Zemlya nuclear range, and it was almost comparable to the stellar hydrogen bomb in the three-body problem.

Liu Xin said: "In this case, do you have any opinions on the snow project? ”

The room was quiet again, everyone you look at me, I look at you.

Soon, one of the astrophysicists took the lead in stating: "I have no opinion, Professor Pang's plan is indeed feasible, and if this can be successful, then the risk of the Earth crossing the asteroid belt can be greatly reduced!" ”

"I'm okay with that, it's a genius idea!"

"I'm okay with ......"

……

Soon, the participants expressed their positions.

Liu Xin said: "In this case, let's focus the meeting on the discussion of snow engineering!" ”

Then, scientists began to discuss snow engineering.

Pang Xuelin only gave the general idea of this plan and a feasible engineering plan, and the specific engineering details naturally need to be planned and calculated in detail by scientists.

For example, the exact location of the hydrogen bomb, how to detonate it, how to accurately calculate the orbit of an asteroid through a cloud of metal dust, what role the space fleet needs to play in it, and so on.

Naturally, Pang Xuelin does not need to go out to solve these problems, and the coalition government has a large number of teams of scientists and engineers who can stand up to solve these problems.

Seeing that everyone in the conference room was caught in a heated discussion, Liu Xin walked to Pang Xuelin's side with a smile and said, "Xiao Pang, are you interested in coming out to talk to the old man." ”

"It's an honor!"

Pang Xuelin nodded.