Jupiter is the oldest!

It turns out that the oldest planet in the solar system is Jupiter. This is said by scientists from the Lawrence Livermore National Laboratory and the Institute of Paleontology at the University of Munster. By studying the isotopes of tungsten and molybdenum in iron meteorites, they came to the conclusion that they came from two clusters that separated from each other somewhere between a million and 3-4 million years after the formation of the solar system.

The most rational explanation for the separation of these clusters is the formation of Jupiter, which created a gap in the protoplanetary disk and prevented the exchange of matter between them. Thus, Jupiter's core formed much earlier than the solar system's nebula dissipated. Analysis showed that this happened just a million years after the formation of the System.

Scientists also found that over a million years, the core of Jupiter gained a mass equal to almost twenty Earth masses, and then over the next 3-4 million years, the planet's mass increased to fifty Earth masses. Previous theories about gas giants say that they form around 10 to 20 times the mass of the Earth and then accumulate gases around them. The conclusion is that such planets must have formed before the disappearance of the nebula, which ceased to exist 1-10 million years after the formation of the solar system.