Mars and Venus could be a double planet

Today, Mars is a dried desert. Conditions on the surface of the planet exclude the possibility of a stable existence of water in liquid form. But it was not always so. At the dawn of the solar system, Mars had a complete hydrosphere. This is indicated by the characteristic details of the relief of the red planet, carved by water streams that once flowed over its surface, as well as the results of chemical analysis of sediment. According to most scientists, in the distant past, Mars had a much denser atmosphere that made the existence of liquid water possible.
Mars and Venus could be the double planet of the planet, Solar, possessed, systems, originally, could, Williams, results, opinions, cases, much, present, to, time, dense, atmosphere, Mars, ancient, Venus, which

There is another important aspect directly related to the climate of ancient Mars. It is associated with the so-called. paradox of the weak young Sun. The fact is that 4 billion years ago our luminary emitted about 30% less energy than it is now. Usually, a global greenhouse effect is used to explain the paradox, which significantly raises the average temperature of the planet.
But not all planetologists agree that Mars had such a dense atmosphere that it was able to compensate for the lack of solar radiation. According to the alternative opinion, the average temperature of ancient Mars was much lower than it was thought, and it was almost completely covered with ice. Large streams of water, traces of which can be seen in the photographs of space stations, were formed only during asteroid bombardments and periods of volcanic activity.
Mars and Venus could be the double planet of the planet, Solar, possessed, systems, originally, could, Williams, results, opinions, cases, much, present, to, time, dense, atmosphere, Mars, ancient, Venus, which

Researchers Cole Brown and Darren Williams of the University of Pennsylvania offered their own explanation for the paradox. According to their study, the results of which were announced at the 232nd annual meeting of the American Astronomical Society, Mars could have formed much closer to the Sun than is commonly believed.
Mars and Venus could be the double planet of the planet, Solar, possessed, systems, originally, could, Williams, results, opinions, cases, much, present, to, time, dense, atmosphere, Mars, ancient, Venus, which

The researchers studied the possibility that Mars and Venus were originally formed together and initially represented a dual planet. Both bodies turned around a common center of mass and, like Pluto and Charon, were constantly facing each other on the same side. The calculations carried out by scientists showed that the planets could have been in such a position for about 100 million years, which is quite enough for the formation of the Martian hydrosphere.
Mars and Venus could be the double planet of the planet, Solar, possessed, systems, originally, could, Williams, results, opinions, cases, much, present, to, time, dense, atmosphere, Mars, ancient, Venus, which

But in the long run, the configuration was unstable. The accumulated gravitational perturbations led to the fact that Mars went to "free floating" in the solar system, eventually, moving to the current orbit. Venus, on the contrary, approached the Sun. The effects caused by this transition could explain the current anomalous rotation of the planet and its lack of satellites.
Mars and Venus could be the double planet of the planet, Solar, possessed, systems, originally, could, Williams, results, opinions, cases, much, present, to, time, dense, atmosphere, Mars, ancient, Venus, which

Brown and Williams recognize that the probability of the reality of the described scenario is hardly very high. Researchers performed thousands of simulations in which Mars was formed along with Venus. In most of them, the red planet eventually collided with Earth or Venus. In another 20% of cases, Mars was thrown out of the solar system. 10% of simulations ended in his fall on the sun. And only in 13% of cases, Mars safely moved to the current orbit.
Mars and Venus could be the double planet of the planet, Solar, possessed, systems, originally, could, Williams, results, opinions, cases, much, present, to, time, dense, atmosphere, Mars, ancient, Venus, which

Of course, 13% of yavgo is not enough for this hypothesis to be able to seriously affect the prevailing ideas about the evolution of the solar system. But at the same time, the figure is large enough to take it into account and conduct additional research on such a possibility.

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