March 22nd.

The headquarters of the Earth Defense Council, under the chairmanship of Qin Yongtu, held its first meeting.

At the meeting, everyone was only slightly surprised that Jiang Bo became the chairman of the council, but soon became accustomed to it.

No one dares to show contempt for him because he is handsome, because many of the next plans will depend on his company to be realized, and he is now everyone's father.

The meeting preliminarily determined the main duties of each department and a brief defense plan, and named the five asteroids the "Fallen" asteroid, and solving the asteroid crisis is a two-way "rescue plan" for the fallen and the earth.

Later, it was pointed out that it was necessary to keep an eye on the movements of the five fallen asteroids, and to call the Sky Survey space telescope (it seemed to have a name before, called New Horizon, but I changed it).

Jiang Bo said that there was no problem, and that he had already informed the nuclear-powered spacecraft to head for the five fallen asteroids, and that they would soon be able to observe them up close and understand their composition.

The Transcendence nuclear-powered spacecraft, which is on a mission above Mars' orbit, received a new order two days ago to stop its Mars orbit patrol mission, accelerate with all its might to five fallen asteroids, and keep an eye on their situation.

Half a month later, on April 6, Transcendence finally approached the first fallen asteroid, and through the videos and pictures taken by Transcendence, the experts of the Earth's Defense Council had a relatively clear understanding of the structure and material composition of the first asteroid.

On April 15, the specific shape and material composition of the five asteroids have been preliminarily understood, of which the first four are metallic and the last one is rocky.

In response to these five asteroids, the Earth Defense Council, experts proposed more than a dozen ways to save the earth, Jiang Bo took the lead in proposing kinetic energy impact and netting traction, but after discussion and calculation, only five barely passed

The first is to launch a large number of high-density objects into space, and then use the engine to accelerate these objects, as long as the 1,000-ton object is accelerated to 100 kilometers per second, that is, 360,000 kilometers per hour, you can obtain great kinetic energy, which is about 50 trillion joules of energy, that is, the power of 1.2 million tons of TNT explosives, and act sideways on the asteroid, so that the asteroid can have a maximum speed of 1.5 kilometers per second in the side direction.

Of course, it won't actually exceed 500 meters per second (1800 km/h), because in the event of a collision, a lot of kinetic energy will be converted into heat, and the angle is also a big problem, but in this way, it can indeed change the angle of flight of the asteroid.

For example, at a distance of 1 million kilometers, colliding with an asteroid causes the asteroid to have a speed of 1,800 kilometers per hour in the lateral direction, and the asteroid rushes towards the Earth at a speed of 92,000 kilometers per hour, and when it reaches the Earth, the lateral speed has caused the asteroid to travel 19,500 kilometers, and the diameter of the Earth is less than 13,000 kilometers.

So at this time, the asteroid will be staggered from the Earth, the wrong distance is about 6500 kilometers to 19500 kilometers, and the speed of the asteroid is much faster than the second cosmic speed, so it will not be captured because of the gravitational pull of the Earth, at this time, the asteroid will pass through the outer space of the Earth, and then fly to the sun.

Of course, this is just a very ideal and simple calculation model, and the actual situation is much more complicated than that, but if you can grasp the timing and angle of the collision, you can make the collision distance a little longer.

For example, if a collision is 5 million kilometers, 10 million kilometers, or 20 million kilometers away from the earth, it will definitely allow the five asteroids to pass by the earth and avoid collisions.

This scheme is for the four metallic asteroids.

The second option is to use a nuclear-powered spacecraft to cast a net for lateral traction, with the use of kinetic weapons, which is technically feasible, but the operation is very difficult, but as long as it is successful, it can greatly ensure that the first four metal asteroids avoid colliding with the earth.

The third is the conventional use of nuclear weapons, but because nuclear weapons have lost their air power and have not been hit by air shock waves, their power in space is extremely limited.

Therefore, the experts of the Earth Defense Council are ready to use a high-yield nuclear weapon to explode close to the rocky asteroid with a diameter of 4.2 kilometers, so that it can destroy the structure of the asteroid, make it split, and turn it into many meteorites with a diameter of only a few tens or even a few meters.

After entering the atmosphere, it will be disintegrated due to friction and heat, and a small number of those that cannot be disintegrated do not fall in dense crowd areas, it doesn't matter, and even if they fall in dense crowd areas, only by taking precautions in advance and destroying them with ground air defense systems can perfectly resolve the asteroid crisis.

Although this would cause many moons in the sky to suffer due to a large amount of asteroid debris, it is better than having an asteroid crash directly into Earth.

As for the fourth option: install an engine on an asteroid, use a nuclear-powered spacecraft with black bones, load the engine, and then quickly accelerate closer to the asteroid, maintain the same speed as it, and then install the engine on the side of the asteroid.

The fuel is specially processed, a large amount of liquid hydrogen and oxygen are mixed, and under the action of the engine, the combustion releases heat and jet to produce a huge thrust, although this thrust is not worth mentioning for an asteroid with a mass of tens of millions of tons, but there is always an acceleration, as long as there is enough time, the orbital angle of the asteroid can always be shifted.

Fifth, hurry up and build an underground shelter, if the first two plans fail, then there is no choice but to hide in the underground shelter, wait for the impact to pass, and then come out to clean up the mess.

Based on these five options, the various departments of the Earth Defense Council began to mobilize resources and become operational rapidly.

As for some other schemes, such as gravitational traction, stopping the earth from rotating, etc., these are not realistic, gravitational traction is not to mention, not so large spaceships, small mass spaceships do not work.

It is also unrealistic to stop the earth from rotating, because the damage caused is greater than that of an asteroid hitting the earth, and more people will die, and the gains outweigh the losses.

(The above is the information I originally prepared, and I thought about it and put it out, and if I write science fiction in the future, I may pick it up and write it again.) ）

There's a little bit more below, wait for me to send it slowly.

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(End of chapter)