In April 2016, I gave a brief lecture course on geodynamics at Moscow State University. The final lecture was devoted to the evolution of the Earth and other planets of the Solar System. One of the audience asked if the Earth during evolution can have an atmosphere similar to the modern atmosphere of Venus, which is known to have a most peculiar-very hot (up to 450 °C) and dense-atmosphere composed mainly of CO 2. My immediate response was: Why not? There is a huge amount of carbonaceous rocks in the surface layers on the Earth, and if the upcoming heating of the Earths surface (when the Sun becomes a red giant) reaches a certain point, it may cause decarbonatization and a rapid growth of atmospheric CO2 and density. Thus, Venus can be a model of the Earths future. Later I kept thinking about this improvise idea and found additional arguments for this hypothesis as well as a possible scenario, which are presented in this article
