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The Planetessimal Accretion Theory (Formation of the solar system), What…
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What is the The Planetessimal Accretion Theory. This theory is one of the theories which is believe to be the formation of the earth and that solar system.
Stage one: The sun and planets came together from a interstellar which is (Situated between Stars). cloud of gas and dust called a solar Nebula
Stage two: A distant supernova explosions may have sent shock waves through the nebula that caused materials in it to concentrate around a particular point. Which them lead to most of the materials to come into the centre form the sun.
Some of the materials began to orbit the central point. this orbiting dust collected into clumps that attracted each other.
Gravity attracted and concerted the clump ,gas and dust. Over time the clumping process generated asteroids and tiny planetessimal that were larger enough to attract each other and collide this being with any object that mass has gravity.
The larger the mass means the larger the gradational pull that make the planets more and less round as planetessimal attracted each other and then collided they then became small planets which still continued to attract and collide with each other which this is known as the Accretion Phase
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Large numbers of the smaller planetissmials which were sucked into the forming planets by gravitational forces exerted by the larger planets, These collisions converted vast amounts of gravitational potenial energy into heat which them melted all the materials in the forming parts of the planets and solar systems that we have today.
The Accretion phase
At the end of the accretion process, the eight large planets of our solar system had been formed. Some of the remaining planetessimals were captured by the gravity of the planets and became moons; others were flung out to the outer solar system by near-miss collisions with the planets – particularly Jupiter and Saturn, which may even be responsible for relocating Neptune and Uranus into their present orbits.
toward the end of this phase planted started to cool by radiating their heat into space. On earth the dense metals sunk to the bottom towards the centre of the planet and them formed a core and that the less dense silicates had formed an outer layer of materials around the core and began to cool and them crystallise them later solidify to form mantle. Icy comets Planetessmals are also thought to be involved in the accretion phase.
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