These six reasons prevented us from completing the interstellar migration.

Interstellar migration has always been a bridge in movies and novels, and human beings are also trying to explore the universe. So can the interstellar migration be completed at present? I take Kepler 22B as an example, because it is the closest planet to the earth and the planet that scientists think may be suitable for human habitation. Explain your point of view.

The first is speed. At present, Kepler 22B is considered as a livable planet by scientists, but it is 638 light years away from the earth, so there is no way to go to this planet at present. First, we can't reach the speed of light. We will use the gravity of the planet to accelerate the spacecraft. The most optimistic estimate is 1% of the speed of light. In this case, it will take 63,800 years to reach this planet, and human civilization will last more than 6,000 years. Can we survive in the spaceship for 63800 years? If 30 years is a generation, we need to breed 2 127 generations to get this far. The future must be realized by using the wormhole principle. So there is no chance at present.

The second is adaptation. Even if we find the wormhole and reach Kepler 22b, we can hardly survive without the adaptability of cockroaches. Everyone should understand that no planet is exactly the same, because it is full of unknown bacteria and viruses, and our body's immunity can't beat them at all. In addition, it is bigger than the earth, so its gravity is great. How many generations will it take to get used to it? At present, only humans have low back pain on the earth, and other animals do not have low back pain (no injury or disease). This is the price of walking upright. At present, we can't adapt to the gravity of our home planet. If gravity doubles, will we go back to crawling? Even if we crawl, can our bones and muscles adapt, and will our organs be damaged?

The third is food. Can our stomachs digest what grows on the land here? If it is a grain similar to the earth, our stomach acid may dissolve it, but it is uncertain whether our intestines can get nutrition from these plants. Maybe we'll get poisoned. Whether our wheat, corn and rice can be planted on this planet is still unknown. Even if it is planted, will it mutate? Will we be poisoned again if we eat the food grown on Kepler 22B's planet? Even if the land is available, what about the water here? Can you nourish the plants on the earth? Can we and the livestock we brought drink the water here?

The fourth is the environment. There may be all kinds of animals and plants here, but it can't be proved that there is radiation here. The land near Chernobyl is polluted by radiation, and plants and animals still live, but we certainly don't want to eat fruits and vegetables contaminated by nuclear. In other words, just because animals and plants can survive does not mean that we can survive. What if there are other cosmic pollutions? Plants can adapt to us, but they cannot. If we eat something like this, we will mutate and destroy the DNA in our bodies. In a few years, we will all die here. Let's talk about animals. Are there many fierce animals here? Will their illness be passed on to us? At present, there are 200 kinds of human and animal diseases on the earth, the famous rabies and mad cow disease. Coupled with poisonous animals, such as poisonous snakes and insect spiders, the insects here may also be poisonous. Can we make serum to immunize their toxins? We are struggling to survive here.

The fifth is life. Kepler 22b is about 65.438+0.5 billion years older than the Earth. What is this concept? In other words, life on earth has just begun, and life here may have evolved into intelligent life, which is what we call aliens. Will we become slaves if we go? Or did they kill them all? I think we probably met this danger by conquering the earth along our sailing route.

The sixth development, I have to mention planting here, which is a basic need for survival. Only through continuous exploration can we grow grains suitable for our consumption here, and we will also process water here for us and our livestock to drink. Buildings should also adapt to the gravity here, and agricultural tractors and other mechanical tools need to be transformed. In addition, the mode of travel, cars, ships and planes must be changed. It is absolutely difficult to launch a satellite off this planet. Gravity here will limit the escape speed of our rocket. In addition, the atmosphere is wider than the earth, so you may think that more fuel is enough. Unfortunately, this is not a simple math problem. So at present, we don't have the ability of interstellar migration.

So I don't think we can immigrate to other planets at present. Please express your opinions.