Why do people on earth always want to emigrate to other planets? Is it possible?

The possibility is very small, because there are few planets that can breed life like our earth. Even if it is confirmed, it may not be possible to go. The distance between the planets is too far. Recently, a planet similar to the earth was discovered, but its volume is more than three times that of the earth, and the surrounding stars are also very small. The planet, named Kepler 22b, seems to be 500,000 light years away from the Earth. The only way to immigrate to the past is probably through the "wormhole".

On our planet, in fact, many problems do not need to be explained. Health preservation is to protect the body and make yourself live longer.

As for "why can't we live and die like ancient times", it has something to do with modern life. In today's life, our life is better now, and food is abundant. Naturally, there are many things that are harmful to our health, so in order to make ourselves healthy, we will not "let nature take its course", but in ancient times, we were not exposed to so many things that were harmful to our health, and naturally it was much more normal.

Scientists calculate by the energy of the sun. You can see how stars age and die, and what causes everything. This is the foundation of scientists.

It is the same as the above that the sun will not shine in the end, and it is also a consistent evolution process. There are many examples in the universe;

In modern warfare, being called "modern" means relying on modern weapons. The use of high-tech weapons is to destroy the most enemies at the least cost and achieve the effect of blocking ten with one and blocking a hundred with one. Otherwise, what is "modern"?

Human life can not be separated from these underground mineral resources, which can only be developed, but now many countries are consciously reducing them;

It doesn't mean that the earth won't be destroyed if resources are not used up. After 5 billion years, the sun will become a red giant and engulf the earth, and the earth will be doomed.