The creation of Martian immigrants

#2 1 Day Graphic Punching Challenge (Phase II) #

China's Tianwen-1 was launched on July 23rd, 2020, but it didn't enter Mars orbit until February 10, 20265438. It took more than six months to see some shadows of Mars at close range, which is enough to show that Mars is far from the earth.

But what people ignore is that if a probe is launched from the earth, it only takes about 100 days to reach Venus, which is much shorter than reaching Mars, but human beings basically set their eyes on Mars, which is farther away from the earth. What is the reason?

Of course, humans have sent probes to detect Venus before. After all, it is the closest planet to the earth. It was the former Soviet Union that made an in-depth exploration of Venus. A * * * launched 16 detectors, only two of which captured the surface of Venus clearly, but it was damaged less than two hours after landing.

If the exploration only fails, it can only show that it is a technical problem, and it is impossible for human beings to give up exploring Venus. We should know that the former Soviet Union also sent a probe to Mars, which is not much better than Venus, but human beings are still paying attention to Mars, indicating that it is only Venus' own reason.

Venus's atmosphere is mainly composed of carbon dioxide and a small amount of nitrogen, but the pressure on the surface of Venus is really too high, which is about 92 atmospheres. What kind of concept is this? It is equivalent to reaching the depth of 1 km on the earth.

We know that with such high pressure, it is impossible for human beings to dive so deep easily. Even a military submarine has a diving depth of only a few hundred meters. If you want to dive to the depth of 1 km, you must also use special materials to build submarines to withstand such high pressure.

However, Venus can't be detected just because it can withstand high pressure, because carbon dioxide is a greenhouse gas, which also leads to a high surface temperature of Venus, which will not be lower than 400 all year round. Even if it is possible to develop high-temperature and high-pressure resistant materials to make detectors, it is still impossible now, because Venus' atmosphere contains strong acidity. If the detector material is not very corrosion-resistant, it will not be long before there is no chance.

In addition, there will be a technical problem, because in the aerospace field, if the launched spacecraft has a smaller mass, it will need less fuel, which will also save more costs. Based on these factors, the technical requirements for manufacturing Venus probes are very high. If a technical problem is not solved, it may lead to the failure of the task.

In contrast, the environment on the surface of Mars is similar to that of the Earth, with only a very thin atmosphere. Although the temperature difference between day and night is great, the maximum temperature is far from the surface temperature of Venus. In this way, the technical requirements for the detector are not as high as those of the Venus detector, and it is generally easier for humans to reach Mars, but its distance will be farther. It just needs to add more fuel and wait for a while. These problems are relatively easy to solve.

At present, many space exploration activities carried out by human beings need to be carried out according to whether it is in line with our human interests. For example, Musk often shouts to immigrate to Mars. The first requirement is whether this planet can meet the conditions of our human existence.

Of course, the environment on the surface of Mars can't be directly suitable for our human survival, but there will be frozen water at its poles, especially underground in Antarctica, and there will be saltwater lakes with liquid water. These water resources are all necessary for our human survival, and perhaps after transformation, they can really meet our human survival. But when it comes to the goal of Mars migration, it is far from it. At least one day in the future, humans can establish a base on Mars for scientific research, which may be closer to reality.

Because of the harsh environment on the surface of Venus mentioned above, it is even more difficult to satisfy human survival. Even if the base is established on the surface, the technical conditions required are probably much higher than that of Mars.

But this does not directly mean that the surface of Venus is not suitable for the existence of life. Because in 2020, astronomers detected phosphine in the atmosphere of Venus. Why can it be inferred that there is life on the surface of Venus because of the existence of this chemical substance?

In fact, humans have already detected the existence of phosphine on the surfaces of Saturn and Jupiter. Phosphine can exist stably on the surfaces of these two planets for a long time, but it will react with phosphine because of the strong acidity of Venus' atmosphere.

Therefore, the phosphine on the surface of Venus will not exist stably for a long time, and the phosphine detected by astronomers should also be produced by some mechanism. Phosphine is generally produced in two ways: one is caused by natural phenomena, such as lightning or volcanic activity; The second is phosphine produced by some anaerobic biological activities.

Generally speaking, the phosphine produced by natural phenomena is very limited, and the activities of these natural phenomena will not appear continuously, so it is difficult to explain that there will be a lot of hydrogen sulfide in the atmosphere of Venus. Therefore, the reasonable explanation should be caused by the existence of some anaerobic organisms, which can produce a lot of phosphine for the surface of Venus.

This discovery is of great significance to scientific research, but whether there are a large number of microorganisms on the surface of Venus remains to be verified. However, due to the harsh surface environment of Venus, it is not suitable for human survival at all. Such objective conditions cannot be changed in a short time, which also shows that it is of little significance for us to explore Venus with detectors now.

To sum up, Venus is the closest planet to the earth, but due to its harsh surface environment, high temperature, high pressure and strong acid, it will require high detection technology for human beings; However, even if human technology can achieve such conditions, detection only meets scientific research and does not meet the conditions for human survival. In contrast, exploring Mars will have greater significance, which is also the value orientation of human beings.

# Almighty Creator #