The earth is as big as Venus, but Venus has a thick atmosphere. What is the reason?

Venus is a contradictory planet, because some studies have found that Venus does not have a magnetic field, but Venus does not have a thin atmosphere like Mars, but its atmosphere is particularly thick, so many people are curious about why Venus has a thick atmosphere when the earth is obviously about the size of Venus. Let's get to know each other.

1. Why is the earth as big as Venus, but Venus has a thick atmosphere?

Venus's atmospheric density is about 100 times that of the earth, and its atmospheric pressure is 90 times that of the earth. In addition, the surface temperature of Venus is even higher than that of Mercury, the nearest to the sun, because the surface temperature of Venus can be as high as 470℃. The reason why Venus has a thick atmosphere may be that with the fall of countless meteorites, the temperature on the surface of the fund is also rising sharply, so that a large amount of water begins to evaporate, and gases such as carbon dioxide inside are slowly released with geological activities.

With the increasing temperature, the carbon in the rock began to be slowly stripped. Then, under the action of ultraviolet rays, water is decomposed into hydrogen and oxygen, and oxygen and carbon are combined into carbon dioxide, which enters the atmosphere and intensifies the greenhouse effect, forming a vicious circle. Under certain temperature conditions, these gases are difficult to escape, so they will still stay on Venus.

Second, how thick is the atmosphere of Venus?

Venus's atmosphere was discovered by humans as early as 176 1 year ago. Its atmosphere is thicker than that of the earth and its surface temperature is extremely high. Its composition is different from that of the earth, because Venus's atmosphere is mainly carbon dioxide, so its atmosphere is very similar to that of Mars. According to some scientists' estimates, the atmospheric quality of Venus is 93 times that of the earth's atmosphere, so it is really good.