Researchers from France and Switzerland showed that the temperature of the atmosphere at the early stage of the existence of Venus was not low enough, and therefore excluded the possibility of forming on the planet of the oceans. The article of scientists was published in the journal Nature.
In 2016, specialists of the NASA NASA NASA NAMA Institute of Names nominated a hypothesis, according to which the thick layer of clouds on Venus could up to a certain moment to reflect most of the sunshine and maintain the climate on the planet relatively cold for water to exist there in liquid state. Throughout millions of years.
Researchers from the University of Geneva, together with French colleagues, decided to assess the consistency of this hypothesis using three-dimensional atmospheric models similar to those used to assess the modern climate of the Earth. Scientists followed how the atmospheric of two planets started from the moment of their formation. Simulation showed that shortly after its occurrence of 4.5 billion years ago, Venus was covered with magma. In order to formed oceans, the temperature of the atmosphere should have fallen quite enough – so that the water condensed and shed rains. However, at that time, the sun was 30 percent dull – steam was transferred to the winds on the night side, where the clouds were mainly and formed. They did not protect against solar radiation, moreover, they allowed the temperature to remain high enough to occur the greenhouse effect. High temperatures on the surface prevented rain drops – and the oceans on the planet were not formed.
Moreover, the model of scientists has shown that be the sun at least a little brighter – if his luminosity was only ten percent less than now – the fate of the Earth is similar to Venus. Researchers note that this in a new way allows you to look at the “paradox of a weak young sun,” who previously considered an obstacle to the appearance of life on Earth. Experts hope that the mission to Venus will help you check the data of their modeling – including the Russian Venus-D – which start in the near future.