Asteroid, Space, Remnants

Initially, the solar system was slightly more than clouds of dust and gas. Then the cold temperature created the sun to fall at the center of the cloud. Newborn stars are burned with nuclear fusion, which spins the light into the spinning disk and turns out. Soon that material was added to the planets, the snow giants and the rocky world, which is building the solar system we know today.

Over the years, asteroids were considered as the remaining substances of planet formation – pieces of material that they never made in the shape of the planet and which were pulled in rock belts of rocky remains, which were between Mars and Jupiter Were surrounded.

But according to a study published in the journal Nature Astronomy Monday, it was once a fragment of the world. Scientists say that a vast majority of half a million bodies in the inner asteroid belt can actually be shirpel from five basic bodies called “planets”. But the confused classes of those lost world meant that they were ruined to collide, which were broken into pieces, which caused more fragments in a cataclysmic cascade that lasted more than 4 billion years Were there.

Katherine Kretke, a planetary scientist from the Southwestern Research Institute who did not attend the study, said that this discovery not only exposes the “mystery” of the asteroid belt. It can also help in resolving the debate about the formation of eight planets including the Earth.

“I find it really exciting that we can see back over time and can potentially see the evidence of what building blocks were creating our solar system.” “If we can return the clock and the asteroid belt was made by these large planets, then in reality, we are telling something about the conditions that make up our planet.”

The main authors of the study, the University of Florida astronomer Stanley Dermot, were not required to investigate the mystery of the formation of the solar system. He and his allies were looking at the data on the mobility of bodies in the internal asteroid belt, hoping to find out that the object leaves the belt – and potentially flies towards the Earth. (For those who are worried about the asteroid collision, the rest assured that Dermot is still studying that question.)

But as Dermott started to see the database of the Earth’s closest objects, he saw something odd about many large asteroids: their cells were inclined, inclined or inclined, relative to the rest of the solar system.


Dermott said, “We could not think of any force working to generate that distribution.” On the other hand, “If a large asteroid has broken down and there is a high tilt, then there is the same tilt in those pieces.”

Scientists previously made it known that almost half-interior belt asteroids belong to the five “family”. But Dermot and his colleagues say that their analysis reveals that this number is as high as 85 percent.

One of the planet Scientist of SRR, David Nesvorny, said that this discovery matches the other observations of the asteroid belt, which were not related to Dermot’s studies. Asteroids belong to the same family, which are in orbit in groups and have similar chemical structures.

Nesvorny said, if it is clear, the implication of this idea is that the asteroids are actually fragments of large bodies: “This means that the asteroids are born large.”

This discovery can help solve a question about the creation of a planet that has troubled the scientists over the years. According to the traditional story of the origin of the solar system, the planets gradually formed from the rise, because the particles in the disc disks sticks together with the big pebbles, then a little larger, until they reach their current size.

But when the scientific computer model tries to recreate this story, then it breaks. Rather than grow, these early planets are splinter after reaching pebbles. As a result of this process, how can they shape the asteroid belt, leave the entire planet alone?

Enter the “Born Big” hypothesis. Nesvorny and many others now think that after gaining the position once in the disc, gravity reaches the pebble stage, is rapidly pulling the material in large quantities to build a huge new planet. In the inner Solar System, it produced small, rocky planets such as Earth; Next to the sun, we got gas giants.

But in the space between Mars and Jupiter, the tremendous gravity of the Solar System’s largest planet has made it difficult to develop a large object, said Nesvorny. Small bodies that had emerged, which probably had a tenth of the planet’s size like the Earth, did not escape the chaos and confrontation coming; They broke apart and formed the asteroid belt which we know today.

Some principles remain about this principle. Tim Mccoy, the geologist of the National Museum of Natural History of Smithsonian, indicated that most of the meteorites coming to Earth do not think they come from large body bodies. And Kretke suggested that if the theory was more than five dozen parents, then the theory could work better.

Meanwhile, Nestor noted that the internal belt is only one-tenth of all asteroids – he hopes to see the analysis applied on the remaining asteroid belt.

Dermott said that he and his colleagues are planning to address the next question. And a few days, he said, research can be applied to other solar systems. Astronomers have found evidence of asteroid belt around Vega and Fomalhaut, only a few dozen light-years away.

Dermott said, “This is the next big step, and it’s happening in our lifetime.” “Whole occupation of planetary formation and development and ‘what do we need to make Earth’s planet elsewhere?’ There is something we can finally discuss in meaningful terms. “


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