Interstellar migration 120

Forget it, I don't expect extra points. I have to accept it. In fact, you can find a lot online.

Yes:

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Cannot:

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Answer supplement:

Want to know whether humans can't migrate to other planets or statistics of natural disasters or something?

Well, I'll call you because you are in a hurry. (Don't look at the reward points, don't add them) because my answer should be worthless. Sort out my answers by yourself, because I don't know what to argue about.

Humans cannot migrate to other planets;

There are several points:

1) time

As far as going to Mars is concerned, if you can't even go to Mars, let alone other planets with worse conditions. If it takes at least 250 days to fly from the earth to the nearest orbit of Mars, then it will take two years to reach it (because the nearest orbit to the earth is once every two years), and it will take at least three years to return, then it will be difficult to solve the problem of food and shelter for astronauts in these three years. Also, transporting development tools from the earth requires a lot of resources. Unless a transfer station or base has been established on the moon and a nuclear-powered engine has been developed, it is impossible to realize interstellar migration.

2) Resources

Imagine how many resources are consumed. If you want to take 2-3 people to the moon and live on it, you should at least launch 200-300 tons of equipment or materials to the moon, but you should know that the earth in distance to the moon is only about 380,000 kilometers. It only takes two minutes to run back and forth. A few seconds. The nearest distance from Mars to the Earth is about 55 million kilometers, which is many times farther than the moon. It is unthinkable to transport hundreds of tons of things to Mars 55 million kilometers away. It is also necessary to consider how those hundreds of tons of things will not be burned into scrap iron when passing through the Martian atmosphere, and how to achieve a soft landing for such heavy things. Otherwise, spending so much money is just to build a "meteor" on Mars, and it takes so much manpower and material resources to send several people, let alone interstellar immigration. It will not be realized in 200 years (except for special reasons, such as another cold war, which usually makes science and technology advance by leaps and bounds).

3) Technology

I'm not kidding. In the next 30 years, space technology will not be able to send people to Mars, let alone immigrate. There are only a few problems in the development of technology: the source of power, the life support system that can run for a long time, the influence of high-energy radiation on human body, and the threat of meteorites to spacecraft.

4) Psychology

What if I have to stay in a small room for more than three years? Normal people can't stand it for a few days. Even if an astronaut has a super psychological quality, he is still human. If a certain mental illness is not treated, the consequences can be imagined.

Statistics of natural disasters: (not 100% accurate, please deal with it first)

Earthquake and tsunami:

There will be more than 5 million large and small earthquakes in a year, about 99% of which are undetectable by human beings. After the tsunami triggered by the Chilean earthquake reached northern Japan, it could also generate waves as high as 1.2 meters, and the ports in northern Japan were flooded.

Caused by abnormal weather:

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The formation of various minerals:

I'm not an expert on how minerals form, but I know a little about how elements form.

At the beginning of the universe, the normal elements (except antimatter and dark matter) were only hydrogen, because the structure of hydrogen is almost too simple (very complicated for human beings), and it has an electron and a nucleus, which means that its mechanism can be easily changed or easily changed into other substances. All minerals are made by stars in their lifetime. The first stars were all made of hydrogen. When the pressure and temperature are high enough, every four hydrogen atoms will polymerize into a helium atom, which will release huge energy. This is the source of energy for stars. At the end of a star, helium will condense into carbon, and heavy atoms such as lead, uranium and iron will be produced when a supernova explodes, and so on. Nearly 120 elements (discovered 1 18) are produced in this way. The earth just collected these elements and slowly evolved into today's minerals. (process unknown)

To tell the truth, I only know more about space flight. Your question is beyond my answer. I can only give a rough idea, for reference only.

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It doesn't matter. If you don't wait for the best answer, your score will be wasted.