The rain above and below Venus is not liquid, but metal pieces. Why is this so? See below for 3triva editors.
The atmosphere of the planet Venus is mainly composed of carbon dioxide and contains a small amount of nitrogen. The atmospheric pressure of Venus is very large, which is 90 times that of Earth, which is equivalent to the pressure at a depth of 1 km in the Earth’s oceans. The presence of large amounts of carbon dioxide has led to the large-scale greenhouse effect on Venus. Without such a greenhouse effect, the temperature would be 400 ° C lower than it is now.
In the lowlands near the equator, the surface temperature of Venus can reach 500 ° C. This makes Venus’ surface temperature even higher than that of Mercury, although it is twice as far away from the sun as Mercury, and it gets only one-fourth of Mercury’s light intensity (2613.9 W / m2 at high altitude and 1071.1 on the surface). W / m2).
Although Venus ’s rotation is slow (Venus ’“ day ”is longer than Earth ’s“ one year ”and the rotation speed of the equatorial zone is only 6.5 kilometers per hour), the temperature difference between day and night is not due to thermal inertia and dense convection Big. The wind in the upper atmosphere can transfer heat evenly around Venus in just four days.
The thick clouds of Venus reflect most of the sunlight back to space, so the surface of Venus receives less sunlight, and most of the sunlight cannot reach the surface of Venus directly. Venus thermal radiation reflectivity is about 60%, and visible light reflectance is even greater. Although Venus is closer to the sun than Earth, its surface receives less light than Earth.
Without the greenhouse effect, the surface temperature of Venus would be very close to Earth. People often take it for granted that Venus’ dense clouds can absorb more heat, which has proven to be very ridiculous. On the contrary, without these clouds, the temperature would be higher.
The greenhouse effect caused by the large amount of carbon dioxide in the atmosphere is the real reason for absorbing more heat. The Venus transit in 2004 had a strong wind of 350 kilometers per hour at the top of the clouds, but on the surface it was calm and calm, not exceeding several kilometers per hour. However, given the denseness of the atmosphere, even very slow winds can have tremendous power to overcome the resistance to advance. Venus’s clouds are mainly composed of sulfur dioxide and sulfuric acid, completely covering the entire surface of Venus. This makes it difficult for observers on Earth to observe the surface of Venus through this barrier. The temperature at the top of these clouds is about -45 ° C.
According to data from NASA, the temperature on Venus’ surface is 464 ° C. The temperature at the top of the cloud is the lowest on Venus, but the surface temperature is never lower than 400 ° C. The highest temperature on the surface of Venus is 447 ° C, which is due to the strong greenhouse effect on Venus. The greenhouse effect refers to the thermal insulation effect of the enclosed space transmitting sunlight due to the lack of heat exchange with the outside world.
The enclosed solar radiation has made Venus’s surface hotter and hotter. The greenhouse effect makes Venus’ surface temperature as high as 465 to 485 ° C, and there are basically no differences in regions, seasons, and night and day. It also causes high pressure on Venus, which is about 90 times that of Earth.
The thick layer of Venus cloud obscures the daytime on Venus. There is no blue sky and white clouds that we are familiar with. There is strong wind at the top of the cloud, about 350 kilometers per hour, but the surface wind speed is very slow, less than a few kilometers per hour. It is very interesting that lightning and thunderstorms will appear over Venus, just like Earth.
Venus’s atmospheric pressure is 90 standard atmospheres (equivalent to the pressure at a depth of 1 km of the Earth’s oceans). The atmosphere is mostly composed of carbon dioxide, and there are several layers of clouds consisting of sulfuric acid that are several kilometers thick. These clouds obstruct our observation of the surface of Venus, making it seem very vague. This dense atmosphere also produced the greenhouse effect, bringing the temperature of Venus’ surface to 400 degrees, exceeding 740 degrees (enough to melt lead bars).
Venus is naturally hotter than Mercury, although Venus is twice as far from the Sun than Mercury. There is strong wind at the top of the cloud, about 350 kilometers per hour, but the surface wind speed is very slow, less than a few kilometers per hour. Venus’ atmosphere is mainly carbon dioxide, accounting for about 96%, and nitrogen 3%.
Above the height of 50 to 70 kilometers, dense thick clouds are suspended, dividing the atmosphere into two layers. Clouds are composed of concentrated sulfuric acid droplets, which are also doped with sulfur particles, so they appear yellow. On a planet with a good climate, it should be difficult to imagine such a crazy world in the solar system. The speed of Venus approaching the surface atmosphere is relatively slow, only a few kilometers per hour, but the upper layer can reach hundreds of kilometers per hour. The speed of Venus’ rotation is so slow that it only makes one revolution in 243 Earth days, but there is such a fast upper layer Atmosphere is still a mystery. In the photo we can observe that the clouds on the surface of Venus show an inverted V shape. This cloud system is called a band wind system. This band wind is actually the convection caused by the sun.