Considering only the temperature, can humans survive on Mars without a spacesuit?

There is a gray-red planet outside the earth's orbit. It is Mars.

As a neighbor of the earth, Mars is much smaller than the earth in both volume and mass. Mars is only about one-seventh the size of the earth and less than one-tenth the mass of the earth.

In appearance, Mars is by no means the most similar planet to Earth in the solar system, but in terms of living conditions, Mars is definitely the best choice outside the Earth. The shortest distance from Mars to Earth is only 55 million kilometers, and the length of a day on Mars is similar to that on Earth. We know that there are 24 hours in a day on the earth, but this is not accurate, because the rotation period of Mars is 24.62 hours, only more than half an hour.

Different from the extremely harsh living environment of other planets, some areas of Mars are at least suitable for survival in temperature.

Near the equator of Mars, the daily maximum temperature can reach about 30 degrees Celsius, which is similar to the temperature in the temperate zone of the earth in summer. So can humans live near the equator of Mars without wearing spacesuits? Don't even think about it Because just the right temperature is not enough.

The most basic condition for human survival is breathing, but breathing on Mars is almost impossible. The atmosphere of Mars is very, very thin. If you have been to the Qinghai-Tibet Plateau, you must have experienced what hypoxia is like. The Qinghai-Tibet Plateau is about 2000 to 7000 meters above sea level. Let's take a median value of about 4500 meters. The atmospheric pressure at this height is about 59% of the standard atmospheric pressure.

On the Qinghai-Tibet Plateau at an altitude of 4,500 meters, we have been able to clearly feel what hypoxia is all about.

For some people with poor health, 59% standard atmospheric pressure is unbearable for a while. The atmospheric pressure on Mars is only 0.8% of that on Earth. So if you don't wear a spacesuit on Mars, suffocation is inevitable. How long you can live on Mars without a spacesuit depends entirely on your ability to hold your breath.

Of course, low air pressure brings not only respiratory disorders, but also blood vessels of human body will expand in extremely low air pressure environment, which will cause a series of health problems. In addition, because there is almost no atmosphere, the surface of Mars is heating up very fast. It's still 30 degrees Celsius near the equator during the day, and it will drop to MINUS 60 degrees or 70 degrees at night.

Because the atmosphere on Mars is very thin, we can also see some beautiful scenery different from that on Earth.

Sunrise and sunset are beautiful scenery on the earth. Since ancient times, many scholars have praised them, but on Mars, they are completely different from those on earth, which is another kind of beauty. Sunrises and sunsets on Mars are blue. If you are on Mars, you will see a bright blue and white ball rising and falling from the horizon.

This blue-and-white sunrise and sunset scene is in sharp contrast with the red sunrise and sunset on the earth. Although the sunrise and sunset on Mars are all blue, the sky is always reddish on weekdays because the soil on Mars contains a lot of hematite.

Although the environment on Mars is not as bad as other planets, it is still impossible to survive on it.

However, with the existing conditions of Mars, it is enough for human beings to build a closed Mars base on it, which is also the original plan for human beings to immigrate to Mars. There is a large amount of water ice in the polar region of Mars, and the water resources have been solved. The materials needed to build a closed base can also be obtained locally by using 3D printing technology. With these basic conditions, it is just around the corner for human beings to realize the initial migration to Mars in the form of closed bases.

Moreover, Mars is still a planet with transformation value. As long as mankind takes the first step and takes the closed base as the origin, it is not impossible to reproduce the magnetic field of Mars in the future and gradually transform it into a new livable planet in the long years.