When the sun was born 4.6 billion years ago Our star used to be surrounded by at least three layers, which later formed the structure of these rings. has become the origin of the world satellite planets asteroid belt and various space objects in the solar system
A team of scientists at Rice University in the US, published their latest study in the Dec. 30, 2021 issue of the journal Nature Astronomy, using computer models to find answers to the question: Why doesn’t our solar system have larger Earth-like planets? Also known as Super Earth. This type of planet is common in the Milky Way Galaxy, with up to 30% among its satellites orbiting sun-like stars.
To this end, the research team created a model of the formation of the solar system. In the example of young stars that have just been born. Most of which have planetary dust discs. The protoplanetary disk is enclosed, and if you look closely at the dust and gas swirl around the emerging star, will find that there are several layers of rings
The sharpest image of the star HL Tauri, which also has a ring around it.
when entering data into the model program Researchers found that eight planets in the solar system and the asteroid belt can be formed from the rings that encircled the Sun in the past by the constituent minerals including location and temperature within each ring layer can explain the history of the solar system including why it is structured in the way we know it today.
Dr Andre Isidoro, an astrophysicist from the Rice University research team said: The ring of the young star Caused by dust and gas groups gather in the edge of the A “pressure bump” is a bar of high pressure that blocks outside particles from entering.
Pressure bumpers in a stellar dust dish. This causes the ring to form layers and the accumulation of various particles in large lumps. which later becomes the seed or embryo of the planet (planetesimals) that allow stars and space objects in the solar system to begin to form.
The inner ring closest to the Sun and has the highest temperature. gave birth to the inner planets such as Mercury, Venus, Earth, Mars and the asteroid belt near Mars from the dust of the tiny grains of sand or particles of mostly silicate minerals
The main component of the three-layered ring the sun had in the past, the innermost layer (red) is silicate minerals, the middle layer (white-blue) is water molecules. The outermost layer (green) is carbon monoxide. The rectangular region is the location of the planets in the inner solar system.
The main component of the three-layered ring the sun had in the past, the innermost layer (red) is silicate minerals, the middle layer (white-blue) is water molecules. The outermost layer (green) is carbon monoxide. The rectangular region is the location of the planets in the inner solar system.
The middle ring, which has a lower temperature. It gave birth to gas planets such as Jupiter, Saturn, Uranus and Neptune, because they were primarily composed of ice particles or snow droplets. The outermost ring contains carbon monoxide particles of dry ice or snowdrops. Formed asteroids and space objects in the Kuiper Belt.
When the research team changed the settings in the new computer model. Specifically, the sun’s middle rings form more slowly. As a result, the formation of super-earth planets took place in the solar system. which this type of planet, despite having Earth-like conditions But they are two to three times larger and up to 10 times more massive.
Dr. Isidoro concluded that “If the middle ring had formed a bit more slowly, particles from the periphery of the dust disk surrounding the sun were encircling. Will be able to enter the inside of the solar system more. and would make our planet a super-earth planet which is larger than today.”
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