This phenomenon could have occurred at the time of planetary formation after the impact of a large body against the future planet The orbital period of Venus is 225 days so that a year on Venus lasts less than a whole day. The combination of these two rotation periods (daily and annual) results in a Sun rising in the West and setting in the East in a 117-day, breathtaking day-night cycle! right?
The atmosphere of Venus is 90 times denser than the terrestrial one, the equivalent to the pressure at 1 km deep under the sea, and is composed of 96.5% of carbon dioxide and 3% of nitrogen.
This means that both planets have the same amount of nitrogen in their atmospheres.
Surprisingly, Earth’s carbon dioxide is stored mainly in calcareous deposits and if released into the atmosphere it would provide a mass of atmospheric carbon dioxide equivalent to that present in the atmosphere of Venus.
Because of the dense atmosphere and its chemical composition, Venus experiences a huge greenhouse effect that raises the surface temperature to over 470ºC. Being 108 million kilometers from the Sun, it is curious that due to this greenhouse effect this planet reaches temperatures similar or higher than Mercury which is 50 million kilometers closer to our star.
But the temperature of this planet isn’t the only terrible thing we’ve detected. In the clouds that make up the atmosphere of Venus are concentrated high indices of sulfuric acid that precipitate towards the surface. But of course, the enormous temperature does not allow this rain of acid to reach the ground in liquid form which causes an irrespirable condensation by breaking down the acid into sulfur dioxide...imagine you are constantly breathing acid on this planet!
We could continue to talk about Venus for several more sessions but we must continue on our way to the confines of the Solar System.
Tonight, look west, and when you see a star that looks like a very bright star, that’s Venus... a hell just 40 million miles from Earth.
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