Immigration conditions for foreigners

The collision of stars is one of the catastrophes that may change the fate of mankind. The dinosaurs that ruled the earth for hundreds of millions of years in history died out because an asteroid hit the earth. So if the earth will collide with a planet in five years, can human science and technology change our destiny?

Now that it is known that a planet will collide with the earth in five years, it means that human science and technology have captured the trajectory of the planet in the universe and obtained the exact time when it collided with the earth. With these data, we can use the current technology of human beings to simulate the consequences of the collision between this planet and the earth and where it will hit the earth through computer modeling. With modern technology, this is a very simple thing.

What can mankind do in these five years? There is an extremely critical factor here, that is, the size of the planet that is going to hit the earth. The size of this planet determines whether human beings can change their destiny. For some smaller asteroids, humans can doubt that the spacecraft will land, and even bomb them with nuclear bombs, giving them a force that deviates from the earth's orbit. Or blow it up to reduce the force of the final impact. Similar scenes have appeared in Hollywood movies. In fact, if there is such a threat, humans can do so, but there is a premise that asteroids cannot be too big. Too big an asteroid, the technology of human nuclear bomb can't change the orbit.

There is a second way for human beings to deal with asteroids, that is, to install propulsion devices on asteroids to provide them with the force to accelerate, decelerate or change their orbits, so as to eventually pass by the earth without forming an impact. But it also requires that the mention of asteroids should not be too big.

If the asteroid is too big for human beings to destroy or turn, then human beings should consider how to survive the asteroid impact. This is related to the location where the asteroid hit the earth. If only dinosaurs-sized asteroids are extinct, human civilization will be hit hard at the current level of human science and technology, but human beings will not be extinct. On the opposite side of the impact point, it is feasible to build a dungeon, a large airship or a huge spaceship to transfer people. After all, there are not many places directly damaged by impact. Then extinction is more about climate change and temperature drop. As long as human beings survive the initial impact and the subsequent temperature drop, although many human beings will die, it is not enough to destroy human beings.

But this only means that an asteroid is only the size of an extinct dinosaur. If it is bigger, the surface of the earth can't guarantee peace. Therefore, at present, human beings do not have mature alien immigration technology, so we have to gamble whether global cooperation can establish camps on the moon within five years, or build enough space stations to send more people into space for refuge. What is the longest survival time in space now? If there are enough space stations to stay in space for more time and then return to the ground after the ground conditions are stable, then it is possible for mankind to start again. However, in this case, with the current technology, it is no longer possible to guarantee that 100% of mankind can escape the disaster. Even in the end, it is possible to use the current frozen embryo technology and use programmed machines to cultivate future human beings in a few years.

If the coming planet is bigger, the whole earth may be smashed, such as the moon impact theory. So in this case, even if you hide on the moon, it is not safe. It is only possible to immigrate to Mars. However, with the current human technology, it is almost impossible to achieve it in five years. The end result is almost the extinction of mankind. At most, it is to launch frozen embryos into the universe and gamble on one in a billion hopes.

So it can be seen from here that if a planet really hits the earth five years later, whether human beings can change their destiny actually depends on the size of the hit planet. After all, at present, human science and technology is powerless for such a huge celestial body as the earth or the moon.