"This 'big briquette' will cool down slowly for thousands of years after the impact, and it will cool down gradually.

However, a large amount of vaporized ocean and surface material at the time of impact will form a thick cloud of particles, blocking the heat from the earth's interior, because the heat is difficult to dissipate, the earth's atmospheric temperature may remain above 400 degrees Celsius for a long time, and the atmospheric pressure will exceed the current standard atmospheric pressure by hundreds of times, and oxygen will also be burned out, resulting in the earth's habitation environment comparable to Venus, the worst of the eight planets in the solar system, or even exceeded.

In addition, the sputtered material thrown into outer space at the time of impact will form a wave of bombardment that lasts for hundreds or even thousands of years after returning to the earth, and it is not until the end of this century bombing that the earth can usher in some peace.

After 50,000 to 100,000 years of cultivation, the earth will begin to cool down, because the entire earth's crust is melted in the catastrophe of annihilation, and after re-cooling, they will melt into a whole, because the ocean evaporates, there is no liquid water as a lubricant to achieve plate tectonic movement, so the huge geological movement energy is difficult to dissipate, so that the earth's volcanic activity will become more frequent and more terrifying.

In another 500,000 to 1 million years, single-celled microbes floating in red-hot magma may land and mutate and evolve over a long period of time, possibly until five billion years later, when the Sun ages and turns into a red giant, and there is no complex life on Earth.

It is also possible that these microorganisms, which can survive in extreme environments, will follow the evolutionary path pioneered by the civilization of the previous era in millions or hundreds of millions of years.

With the long-term mammation, they may grow into complex life forms such as plants, mammals, fish, and invertebrates, or they may go on a completely different evolutionary path, and may even no longer appear carbon-based organisms, but silicon-based organisms that metabolize silica, or energy bodies that do not have corpses.

Of course, given the advantages of carbon-based and the choice of carbon-based organisms by life forms, the likelihood of the latter is slim to none.

Regardless of whether life appears or not, no matter which path the successor takes, the time scale will be stretched to a degree unimaginable to mankind, for human beings, millions of years cover the whole process of civilization from germination to growth to prosperity, decline and extinction, and for galaxies and the universe, millions of years are just a flick of a finger. ”

This is the end of the subtitles, and everyone is still holding their breath, not daring to make a sound. Ou Yang put down his precious fountain pen, Director Wei scratched his neat sideburns, the uncle and nephew of the Qi family stared down at the teacup in front of him without saying a word, Yu Qian quietly opened the gourd and poured wine on his head, Yang Xiaoqian rubbed his eyebrows and temples with a headache.

"If it's the meteorite that caused the Chicxulub crater, oh, the asteroid that people thought caused the mass extinction of life in the Cretaceous period 65 million years ago, then we still have a solution, and even if we can't successfully intercept the turn, then after crushing it in low Earth orbit with nuclear weapons, the small meteorites with scattered masses will not be able to penetrate the earth's crust, and the magma in the Earth's interior will not erupt, and it will not cause a supervolcanic eruption, as long as it does not hit an area like the Yucatan Peninsula, which is rich in crude oil and hydrocarbons, Rather, it hits the low- and medium-hydrocarbon regions, and it will not cause a mass extinction. ”

With the video as a foreshadowing, Academician Zhu began to answer Yang Xiaoqian's questions.

"But if there is an asteroid with a diameter of 500 kilometers like the one in the video, we are really helpless, in fact, according to the information that has been translated now, the other Earth's, uh, this Royal Academy of Sciences of the Great German Empire, has tried all the ideas we have now, and it has been proven that none of them will work."

In other words, with the current level of science and technology of human beings on the earth, once they encounter such a disaster, they can only wait for death.

Yang Xiaoqian rarely showed irritability on his face, he rudely emptied the teacup, snatched the wine gourd in Guo Qian's hand, and poured wine into the empty cup, the smell of wine and smoke permeated the conference room, Director Wei frowned, hesitated again and again but did not say anything.

"Alas, we humans are really too small." Academician Zhu's mood and perception are obviously more complicated than those "illiterate" people in the conference room who do not know the vastness of the universe, "Maybe it is really lucky to be able to develop and emerge a civilization, but one day I am afraid that I will not be so lucky, I am afraid it will be ......"

The pessimism and despair in the eyes of the audience were strong enough, and the old people really shouldn't spread such negative concepts, but no one stopped them, and watching the video for more than an hour seemed to use up all people's strength, and it was difficult to even lift their mouths.

After a while, someone asked aloud: "Academician Zhu, is there a high probability of an asteroid impact of this scale?" ”

"How to say it, asteroids are also planets, but any asteroid with sufficient mass and volume, after entering the gravitational range of a star or a large planet, should be captured by a celestial body larger than it, either as a planet of a star or as a satellite of a planet."

"Astronomers around the world have not found a single asteroid with a diameter of more than 100 kilometers that is still orbiting in an irregular orbit, and generally speaking, asteroid impacts of this magnitude are due to the overlapping orbits of many celestial bodies. We all know that in addition to the stars orbiting the stars in elliptical orbits, there are also other celestial bodies in orbits, and when their orbits coincide at a certain point, gravitational interaction will break the equilibrium and cause impacts. ”

"And like what we see in the video, the asteroid is like a bullet fired by a sniper, accurately avoiding the gravitational effect of other celestial bodies during its operation and flying directly to the earth, or rather, it is more like calculating the gravitational effect of other celestial bodies in advance, and then entering the appropriate trajectory at the right time, at the right speed, and then going straight to low earth orbit to be captured by the earth's gravity...... If a coincidence like this is really just a coincidence, then the probability of it happening is probably even smaller than the probability of life appearing. ”

The person who asked the question let out a sigh of relief, as if he had picked up a life, but he had just taken a breath, and Yang Xiaoqian asked him to suck that breath back.

"No offense, Academician Zhu" Yang Xiaoqian shook his head, looked at the computer's camera, and said sincerely, "I think it is pointless to use astrophysics and mathematical probability to discuss the possibility of an asteroid impact. ”

"On another earth, in the Ming Dynasty four hundred years ago, there was the first catastrophe of unknown origin, living corpses, which we call zombies and mutants, and the Awakened appeared."

"In our world, last July, zombies, mutants, and awakened people also appeared."

"In that world destroyed by asteroids, in 2000, zombies, mutants, and awakened people appeared."

"What does this mean?"