[Epoch Times October 22, 2021](Epoch Times reporter Di Rui compiled a report) A new study found that at the beginning of the formation of the solar system about 4.5 billion years ago, there was a clear gap in the thick dust disk around the sun. This can finally explain why meteorites from the solar system always clearly come from two regions-it is this gap that divides the solar system into two boundaries, the outer and inner boundaries, which are far and near from the sun.
This dusty disk is also called the primordial planetary disk. There are such dusty disks around the stars. The planets in this star family are born from such dusty disks one by one. A study published in the journal Science Advances on October 15 showed direct evidence that there was a mysterious interstitial zone in the planetary disk around the early solar system.
The study explained that chondrules (chondrules) found in meteorites carry information about the magnetic field of their source material. Each of these spherulites has a diameter of about 100 microns and was formed in the early dust disk of the solar system. The orientation of the electrons inside is consistent with the magnetic field of the surrounding environment when they were born.
This study found that among the meteorites found on Earth, one type comes from areas closer to the sun, and the other type comes from areas farther from the sun. Strangely, the research team found that the magnetic field in the spherulites from areas farther from the sun is stronger than the magnetic field from areas closer to the sun. Generally speaking, the strength of the magnetic field in the original planetary disk should decrease as the distance from the sun increases.
This study found that the magnetic field strength in the spherulites from the outer solar system is about 100 microtesla (microtesla), and the magnetic field strength in the inner spherulites is only about 50 microtesla. The current magnetic field strength of the earth is about 50 microtesla.
The stronger the magnetic field of the planet’s birth area, the stronger its ability to absorb gas and dust. This discovery means that planets in the outer regions of the solar system have stronger accretion capabilities than those in the inner surroundings. For example, Jupiter, a giant gas planet, is located in the outer solar system.
Why does this interstitial zone appear in the planetary disks around the solar system? The study puts forward two guesses.
One guess is that Jupiter played a big role in it. With the formation of this specific gas planet, its huge gravitational force continues to pull matter toward the outer areas of the solar system, pulling out an air strike zone in the middle of the dust disk.
Another guess is that the wind on the surface of the dust disk blows it into two parts. The strong magnetic field in the dust disk creates wind on the surface of the dust disk, blowing the material into two parts, inside and outside.
Regardless of the reason, the research team stated that this interstitial zone acts as a watershed on the boundary, making it difficult to exchange materials between the inner and outer regions. The planets like the Earth and Mars are all planets located in the inner periphery of the solar system, which mostly contain rocky components; while the outer planets are all gas and icy crystalline planets, like Jupiter.
Cauê Borlina of the Department of Earth, Atmosphere, and Planetary Sciences at the Massachusetts Institute of Technology said: “It’s difficult for planets and matter to cross the earth boundary. Many protoplanetary disks around stars have gaps. , Our research shows that there is also a gap zone in the primitive planetary disk of our early solar system. It has a great influence on the birth of planets in the inner and outer regions.” ◇
Editor in charge: Zhu Hanru
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