It is obvious that Venus is closer to the earth. Why are humans keen to explore Mars?

Indeed, Venus is much closer to the earth than Mars! It takes 65,438+000 days for a human probe to fly to Venus and 286 days for a human probe to fly to Mars. Venus is only a little more than 40 million kilometers away from the earth when it is closest, while Mars is 55 million kilometers away from the earth when it is closest, and more than 400 million kilometers away. Not only that, Venus has several advantages over Mars.

Venus is the closest planet to the earth and the closest celestial body except the moon.

The distance between celestial bodies in the solar system is not fixed, because everyone runs around the sun in an orderly way in their respective orbits, at a fast speed or a slow speed, and at a distance from the star-the sun, and the time for them to make a revolution is different from that for a revolution, which causes the distance between the two celestial bodies to be far or near. Fortunately, the revolutions of all planets in the solar system are carried out on one plane (ecliptic plane), which makes the orbits and laws of planets and satellites traceable and not too chaotic. If it is a three-dimensional operation, it will be much more complicated and greatly increase the possibility of collision. Therefore, all things in the world, nature makes man, and all things in the universe complement each other and help each other. This beautiful planet gave birth to this colorful world. Venus and the earth revolve around the sun on the same plane. Venus is located in the interior of the earth and travels between the sun and the earth for an average of 584 days. At this time, the distance between the two is the closest and the closest moment, with a distance of 40.5 million kilometers. In other words, Venus is 40.5 million kilometers away from the Earth! This is the planet closest to the earth, and it is also the celestial body closest to the earth except the moon.

Venus is the sister star of the earth, and is called the "twin" of the earth, which is most similar to the earth.

Venus is the sister star of the earth, which is most similar to the earth. Venus has a radius of 6073km, and radius of the earth is 637 1 km, which is very close. The radius of Venus is only less than 300 kilometers smaller than that of the Earth, which is not obvious for the diameters of several thousand kilometers of the two planets. Venus is also a rocky planet, similar in composition and slightly less dense than the earth. Venus has a mass of 4.9 trillion tons, and the earth has a mass of 6 trillion tons. There is little difference between them. Venus is 0.9 times the size of the earth and four-fifths the mass of the earth. Therefore, both in size and mass, Venus is very similar to the Earth, and its size is basically the same. If you put the earth and Venus together, you will find that they are very similar in size, the only difference is the color. The earth is blue and Venus is orange.

It is also very important that the gravity on the surface of Venus is almost the same as that on the earth. If a man can stand on Venus, he won't realize the obvious gravity difference. After living on the earth for millions of years, human beings have already adapted to the gravity environment of the earth, and the human body has evolved to the best state to adapt to the gravity environment of the earth. On the contrary, gravity is too large or too small, which is not suitable for human survival. Astronauts on the space station, even after living in space for several months, have undergone great changes in their physical functions, such as decreased body fluids, osteoporosis, muscle atrophy and decreased fertility.

In recent years, there has been a global craze for Mars. The United States, China, Japanese, Indian, Australian, United Arab Emirates, European Space Agency and other countries in the world have launched probes to explore Mars. Mars probes from China and the United States have landed on Mars for exploration, photographing and sampling.

Then, since Venus is so similar to the Earth and the distance is the closest, why do people disdain it instead of exploring it, instead of going further and further to explore Mars?

The Soviet Union has launched more than 40 probes to detect Venus, and the United States is not far behind. Although not as many as the Soviet Union, more than a dozen were launched. There is a fact that cannot be ignored. The success rate of the probe landing on Venus is very low, with the highest 10%. Most probes crashed into the atmosphere of Venus. As the veil of Venus was gradually unveiled, people began to be disappointed with Venus, and their blood gradually cooled down. Scientists have found that Venus is quite different from people's imagination except that it is similar to the Earth in size and gravity, but it is quite different in other aspects. Not only that, Venus has many abnormal and anti-human phenomena, some of which are horrible. It is embodied in the following aspects.

First, Venus has a strong atmosphere, but it is basically carbon dioxide, and human beings can't breathe at all.

Venus is the only planet in the solar system with a strong atmosphere, but sadly, its atmosphere is mainly carbon dioxide, up to 99.6%. Not only can living things not breathe, but also because of the greenhouse effect, the temperature on Venus remains high, and there is no distinction between day and night. In other words, Venus is not only hot, but also high everywhere and at night.

Venus is the hottest planet in the solar system. Its temperature is as high as 465 degrees Celsius, and it can easily melt metals such as lead and tin, not to mention liquid water. Even a little water vapor can't be left, and the average temperature of the earth is only 15. It is almost impossible for creatures to survive on Venus.

Venus is not only hot, but also very average. The temperature is above 400 degrees, whether it is facing the sun or facing away from the sun at night. This is mainly due to the greenhouse effect of carbon dioxide. Venus's thick atmosphere encloses heat and prevents it from radiating into space, which makes Venus like a big steamer. Because of this, Venus is hotter than Mercury! It stands to reason that the closer to the sun, the more radiation and heat it receives, and the higher the temperature will be. Mercury is much closer to the sun than Venus, but mercury has no atmosphere, so it can't retain heat, so although it is very hot during the day, the temperature will drop sharply at night, and the temperature difference between day and night is as high as 600 degrees. Even during the day, the temperature on Mercury is only about 420, which is not as high as Venus.

It will rain on Venus, but it will rain with sulfuric acid. There will also be lightning and thunder on Venus, and the natural phenomenon is extremely foggy, but the environment is harsh, sulfuric acid rain and sulfuric acid fog are rampant, and the surface is corroded.

Fourth, the atmospheric pressure on Venus is extremely high, which is 92 times that of the Earth. It also rotates in the opposite direction and is the only planet in the solar system that rotates in the opposite direction.

At such a high atmospheric pressure, metal detectors are hard to last, let alone human beings with flesh and blood. Of the more than forty probes launched by the Soviet Union, only 10 landed successfully, and the others were either burned or lost contact, resulting in heavy losses. Even these 10 successes didn't last long, and some went on strike after only working for a few minutes. The "Venus" series of probes launched by the United States only succeeded once, barely, because four probes and 1 probe car burned down when landing, leaving only 1 small probe to keep communication with the earth 1 hour, and then lost contact.

After experiencing the disappointment of exploring Venus, human beings turned their eyes to Mars beyond the earth. It turns out that Mars is much milder than Venus. Although Mars is a little far from the earth, its average surface temperature is about MINUS 50 degrees, and it is about MINUS 20 degrees near the equator, which is similar to winter on earth. In Oymyakon, eastern Siberia, Russia, the temperature is as low as MINUS 70 degrees, which is much colder than that on Mars, and the residents there still live.

Mars is not only mild in temperature, but also has a magnetic field, which can shield cosmic ray radiation. This is very important. Venus has created an extremely harsh climate because it has no magnetic field. The climate, topography and surface of Mars are similar to those of Gobi and desert on Earth, except that there is no sound, and the sky is orange. It is a little colder, and other places on Mars are not extreme. At present, all countries in the world are scrambling to explore Mars and regard Mars as the spare tire of the earth, so as to immigrate to and from Mars.

Mars is a little bigger than the moon and much smaller than the earth. Its diameter is only half that of the earth, its volume is 15%, its mass is 10.8%, and its size is only about one sixth of that of the earth. But looking at the whole solar system, only Mars is suitable for future immigrants. Of the other three terrestrial planets, Mercury and Venus can be ruled out directly. Two wooden planets have no rocky surfaces and cannot be settled. The other two ice giants are too cold and too far away. In addition, Mars polar region also contains a lot of ice, which is the basis for solving drinking water in the future. Scientists have discovered that life once existed on Mars. It is as vibrant as the earth hundreds of millions of years ago. A large number of dry gullies, washed banks and desolate Gobi on Mars are very similar to some places on the earth today. Mars now is what the earth will look like in about 1 100 million years. Exploring and studying Mars will also help to uncover the evolutionary history of Mars and predict the life course of the earth.

In short, Mars is much better than Venus in all aspects! Exploring Venus will only be futile, and exploring Mars is the best choice. Therefore, at present, only Mars is the best research and exploration object for human beings. This is also the main reason why countries around the world are scrambling to explore Mars in recent years.