Throughout the Earth, various winds blow daily. In some areas, residents annually observe light blows, and somewhere strong hurricanes are quite common. But only on the third planet from the Sun are there winds, or are all celestial bodies in the Universe endowed with such a feature?
How does the wind appear
First you need to figure out how the wind forms. Since most planets rotate around their axis and make an orbit along the star, over time, certain areas of the surface receive different amounts of heat. Accordingly, the air temperature in these places is different. And as it warms up, it rises up to the upper layers of the atmosphere, where the temperature is lower.
When the heated air goes to the clouds, the pressure on the surface in this place decreases. As it rises, it cools and goes to other areas, where it falls to the ground. At this point, increased pressure is created. Because of this, air moves to the place where it is lower. During this transportation, wind also arises. And the greater the difference in pressure, the higher its speed.
Are winds blowing on all the planets?
Since the wind appears due to the movement of air from areas with different pressures, it is possible only on those planets where there is an atmosphere. After all, it is in it that there are air and other gaseous substances that heat up under the action of sunlight and begin to move in space.
Depending on the distance to the star and the composition of the atmosphere, the wind speed can be different. For example, on Venus the speed reaches 100 m / s, and on Neptune it is 580 m / s.
Interesting fact: in the constellation Chanterelle is the planet HD 189733 A b, where the fastest winds are registered, the speed of which is 2 km / s. Because of the composition of the planet, glass fragments fly over the surface.
If there is no atmosphere on the planet, then the appearance of wind above its surface is impossible. One of these is Mercury - the closest planet to the Sun. It is always turned to the star on one side, which is why it is always hot in one half and eternal frost on the other. Due to the lack of atmosphere, the movement of air on its surface is impossible.
The wind blows on all planets that have an atmosphere. When the heated air rises and descends after cooling, it moves to the area with high pressure. So the wind appears.
