Why is Mars not suitable for human migration all year round?

Mars is the fourth planet from the sun. The earth ranks third, and Mars is the closest planet to the earth.

Mars also rotates, and the rotation time is close to that of the earth. It takes more than 600 days to go around the sun, which is also the reason for Ta's long journey.

Mars is farther away from the sun than the earth, with an average temperature of about -68 degrees and a maximum temperature of about -23 degrees. There may be solid ice in the second pole of Ta. Because there is no water on the surface and no atmosphere is formed, oxygen cannot be produced. Necessary conditions for human life: water, oxygen and Mars; The temperature is too low, and there is no atmospheric protective layer. So Mars is not suitable for human survival at present.

In the future, scientists will transform Mars into a second earth (quite close to OK) through major transformation, and let human beings emigrate.

Mars has no water and no oxygen temperature difference, so people on earth can't live on it. If there is ice on the fire and ice under the thick soil, it may be that red-hot steel is artificially sent to the ice core for vaporization, resulting in smoke clouds. Then microorganisms and algae will naturally appear, and after several years of evolution, intelligent creatures may appear, and then humans can live there.

Although there are residual water ice in some places on Mars (there was an ocean on Mars more than 30 years ago), it is difficult to find it.

There is no such environment and resources (food) on the earth.

Note that although Mars is uninhabitable, it is at least much better than other planets in the solar system. Mars has a polar cap, the upper layer is dry ice (solid carbon dioxide) and the lower layer is water ice. This remains more than 3 billion years ago, when Mars and the Earth had the same atmosphere, warm climate and ocean in the northern hemisphere.

A certain amount of air provides air pressure and oxygen, and the air pressure for human survival is around a standard air pressure. People will react when the air pressure is low. Just like climbing a mountain has a mountain reaction, because the air pressure is too low, the tissues and organs of the human body may burst; Fish salvaged from the deep sea will die when they reach the surface, because the pressure drops sharply. Of course, oxygen in the air is essential. Provide oxygen for breathing and ensure the smooth progress of various physiological reactions of the human body. Without oxygen, people's life can't last more than 3 minutes, and people can't live without oxygen.

Mars is also the most fascinating place for human beings. It looks beautiful and fashionable. This is a planet with desert, wind, clouds and ancient river bed relics. It is difficult to go to Mars, because it is difficult, which may be the best reason for mankind to conquer Mars. As we often say: set a goal and dream, and then work hard to achieve it. Especially when it is very laborious, even requires sacrifice or a lot of effort, the sense of accomplishment of finally achieving success is quite attractive!

On the other hand, the beauty of Mars can't survive unless people don't need to eat meat and oxygen. What is the use of beauty? Isn't it? A place without air, extremely cold. When you landed on the surface of Mars, those few seconds passed, and then you couldn't breathe, lacked oxygen and lost consciousness!