The oldest planet of the solar system is Jupiter 木星是太陽系中最老的行星
An international team of researchers was able to prove that Jupiter is the oldest planet in our planetary system.
Analyzing the isotopes of tungsten and molybdenum, which are part of the substance of iron meteorites, a team of scientists in a new paper found that the material of meteorites is represented by two distinctly different species associated with two parts of the solar nebula, which initially co-existed, but were then separated between 1 million And 3-4 million years after the formation of the solar system.
"The most likely mechanism for this effective separation is the formation of Jupiter, which cut a gap in the disk and prevented the exchange of material between these two parts of the solar nebula," said Thomas Kruijer, the main author of the new work. "Its solid core was formed long before the scattering of the solar nebula gas, which is consistent with the model for the formation of giant planets, called the nuclear accretion model."
The team showed that the solid core of Jupiter was formed no more than 1 million years after the formation of the solar system, which makes it the most ancient planet in the solar system.