When can earthlings emigrate to other planets?

It is more realistic to immigrate to Mars. Professor Lei Yuanxing said in his book "The Secret of the Earth": "... the earth is just hail falling from the clouds of the sun. It doesn't repeat yesterday's orbit, but it is spiraling down to the sun at a vertical speed of 0.5 meters per day. The material that makes up the earth comes from the sun, and the sun is of course the destination of the earth. After 250 million years, Mercury will fall into the sun and melt, and the earth will enter the orbit of the cash star. Future generations will get rid of the present earth like ancestors abandoned Venus' hometown and migrate to Mars, that is, enter the current earth orbit. " Because the diameter of Mars is about 6,800 kilometers, its mass is about 1 of that of the Earth, and its gravity is 0.375 times that of the Earth. 687 Earth Days is a year on Mars, and the length of a day on Mars is 24 hours and 37 minutes. The surface temperature of Mars varies greatly with seasons and day and night, ranging from -80℃ to +20℃. There are two satellites on Mars. At present, there are sandstorms that last for several months on Mars every year. The surface of Mars is covered with desert and rocks. There is a lot of ice at the poles of Mars, and there is a weak magnetic field and a relatively thin atmosphere on Mars. The present environment of Mars is that of the Earth more than 200 million years ago. In the solar system, Mars is the most suitable planet for life outside the earth.

Li Jing, a researcher at the National Astronomical Observatory of the Chinese Academy of Sciences, said that there are many similarities between the Martian environment and the Earth. There is an atmosphere on the surface of Mars, and there are also sandstorms that are often seen on the earth. Like the earth, there are four seasons, but one year on Mars is equivalent to two years on the earth. It has also been observed that there may be a lot of ice in the polar cap of Mars. Academician Ouyang Ziyuan once said at the scientific report meeting that it is more realistic and easier for human beings to survive on Mars than to emigrate to the moon. It can be seen that Venus is the hometown of mankind, the earth is the temporary home of mankind, Mars is the future garden of mankind, and the moon is the space laboratory of mankind.