Astronomers have shown that if Venus orbits the earth 16 days slower than at present, the temperature of its atmosphere and the surface would have been comparable to terrestrial values. This would not prevent the increase in solar flux, the value of which in ancient times, according to scientists, was higher by 46-70 percent.
About 715 million years ago the climate Venus, as shown by scientists, could not have been suitable for life. However, if on the surface initially there was even a shallow ocean, in more ancient times, the planet could support life on its surface liquid water and suitable for primitive life conditions.
Scientists conducted a three-dimensional modeling of climate change, which could occur on Venus in the past three billion years. To do this, astronomers used topographic data obtained during the Magellan mission, and available climate models of the planet.
The size, mass, and acceleration due to gravity on the surface of the second distance from the Sun planet systems are comparable to those of the Earth. Temperature modern atmosphere of Venus reaches 750 degrees Kelvin, and its shell of gas is 90 times denser than Earth’s. A full revolution around the Sun makes the planet for 243 Earth days.
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