Jupiter Is the Oldest Planet in the Solar System, New Evidence Shows

Jupiter Is the Oldest Planet in the Solar System, New Evidence Shows

Jupiter – the largest planet in our solar system – is also the oldest, according to scientists who have found that the gas giant was formed four million years after the solar formation.

Knowing the age of Jupiter is essential for understanding how the solar system became its current architecture. Although the models predict that Jupiter was formed relatively early, so far, its formation had not been closed.

“We did not get to test Jupiter (unlike other bodies like Earth, Mars, Moon and Asteroids),” said Thomas Kruijer, Lawrence Livermore National Laboratory (LLNL) in the US.

“In our study, we used the isotopic signatures of meteorites (derived from asteroids) to infer the age of Jupiter,” said Kruijer, lead author of the study published in the Proceedings of the National Academy of Sciences.

Looking for isotopes of tungsten and molybdenum in iron meteorites, scientists have found that meteorites consist of two genetically distinct nebulous tanks that coexisted but remained separated between one million and three to four million years after the formation of the solar system.

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“The most plausible mechanism for efficient separation is the formation of Jupiter, opening a space in the disk and preventing the exchange of materials between the two tanks,” said Kruijer.

“Jupiter is the oldest planet in the solar system, and its solid core formed well before the gas in the solar nebula dissipates, according to the base accumulation model for the formation of the giant planet” has, he said.

Jupiter is the most massive planet in the solar system and its presence has had a huge effect on the dynamics of solar disk acceleration.
Scientists have demonstrated, through isotopic analysis of meteorites, the solid nucleus of Jupiter was formed only about a million years after the beginning of the history of the solar system, making it the oldest planet.

Thanks to its rapid formation, Jupiter acts as an effective barrier against the inward transport of the material through the disk, which could explain why our solar system lacks super-Earths (an extrasolar planet with a mass greater than Earth ).

The team found that the Jupiter nucleus has increased about 20 times the Earth’s mass in a million years, followed by a more prolonged growth to 50 times the Earth’s mass until at least 3-4 million years after formation Solar system.

Early theories propose that gaseous giant planets such as Jupiter and Saturn imply high growth solid nuclei of about 10 to 20 times the Earth’s mass, followed by the accumulation of gas in these nuclei.

So the bottom line is that gas-generating nuclei must be formed before the dissipation of the solar nebula – the circum-gaseous disk surrounding the young sun – that probably occurred between 1 million years and 10 million years after Formation of the solar system.

“We are able to get away with Jupiter more accurately within a million years using isotope signatures of meteorites,” the researchers said.

Although this rapid acceleration of the cores was modeled, it was not possible to leave its formation.

“Our measurements show that the growth of Jupiter can be dated with time of genetic formation and meteorites separately,” said Kruijer.