The planets originated from dust and gas and surrounded the young sun. The orbits of gas giants are thought to have once been quite close and in the form of circles, but gravitational interactions have changed them to their present appearance. According to scientists, this configuration is “highly unusual”, but the reasons are not known.
American scientists have created thousands of models for how the orbits of solar system planets evolved over time and believe they have found the most likely explanation. According to them, Jupiter and Saturn switched to their “eccentric” oval orbits earlier than previously thought.
According to astronomers, the orbits of ice giants such as Uranus and Neptune were influenced by a gravitational withdrawal of a mysterious planet that is now missing and which they believe was an ice giant between Saturn and Uranus.
"We already know that there are thousands of planetary systems in our galaxy alone,” says Matt Clement of the Carnegie Science Institute in Washington, head of the study. 'But it turns out that the arrangement of planets in our solar system is quite unusual, so we used models to recreate formation processes, he clarified. It's kind of like trying to understand what happened during a crash - how fast the cars were moving, in what directions,” he adds.
Scientists believed that at the dawn of its existence, Jupiter performed three full turns around the sun during the time Saturn made two full laps. The analysis of experts from Clement's team showed that this hypothesis does not explain the current configuration of the gas giants.
According to their model, Jupiter most likely performed two turns around the sun during which Saturn made one turn. It was also found that the orbits of Uranus and Neptune were influenced by numerous external factors. Among them are the gravitational influence of the Kuiper Belt, as well as the impact of another ice giant that has been ejected from its orbit. The team believes their model could be used to study the creation of planets and of planetary systems on which there could be life.
There was another planet in our solar system.
In the solar system, there was probably once another planet that was ejected from its orbit, but whose presence contributed to current planetary orbits, the Daily Mail reported, as cited by BTA.tags:
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