Venus is close to the Earth, so why do scientists choose to go to Mars instead of Venus?

In the infinite space of the universe, there is a lot of celestial knowledge that we cannot know. Venus, as the closest terrestrial planet to the earth, has always been the subject of research by humans. So you know that Venus is close to the earth, why do scientists choose to go to Mars instead of Venus? The reason why humans do not choose to land on Venus is because the environment on Venus is not suitable for human survival, while the conditions on Mars are better than those on Venus.

The main purpose of human exploration of outer space is to find the origin of life, but the signs of life on Venus are far lower than those on Mars. First of all, Venus is the hottest planet in the solar system. Its surface temperature is about 445 degrees Celsius. This is because the atmosphere of Venus contains a large amount of carbon dioxide, causing it to form a greenhouse effect. Therefore, regardless of the temperature on Venus day and night They are extremely high and the environment is very harsh. There is no chance of survival if a person stands on it. The carbon dioxide concentration of Mars is relatively low and the environment is better than Venus.

Secondly, in the atmosphere on the surface of Venus, the concentration of carbon dioxide accounts for about 60%. When humans stand on it, the pressure they experience is equivalent to about a kilometer in the deep sea, and the atmosphere is dense. It also contains sulfuric acid, so it is very difficult to land on Venus. In the upper part of the atmosphere of Venus, there are very strong winds, and the wind speed can reach 350 kilometers per hour, which is faster than the seventeenth wind speed on Earth. Such a large wind tree is very important for those who land on Venus. It's a huge test for both spacecraft and humans. Under such harsh conditions, the possibility of signs of life on Venus is slim.

During the former Soviet Union, about eight unmanned probes were launched to land on Venus, and the longest time they stayed was only about 110 minutes. Moreover, the upper atmosphere of Venus contains a lot of toxic gases and moisture in the air, which condense to form toxic acid rain. Even if you land on Venus, you will never return. This is why scientists choose to go to Mars instead of Venus. .