Formation of Planets

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From early Greeks, to early Romans, to Arostotle, to Capernicus, to Galileo, to Edwin Hubble, they have all have asked themselves how the Universe starts, how the planets gets into the Universe, and how did human beings get here. In the last century, stronger telescopes and advanced supercomputer have led to more discoveries and knowledge of how the Universe came to be as it is today faster than before. Many astronomers accepted the fact that the Universe was formed about 14 billion years ago by a Big Bang, an explosion that also created protons, neutrons, and electrons. This report will describe the five theories and processes involved in the formation of the solar system.
Planets are formed by the process of new layers on top of existing layers. The pieces that bounds to become a planet gradually grow larger in a process known as accretion. Planetesimals and protoplanets are the main stages of how the planets are formed. Process of how the planets are formed are different for terrestrial planets and Jovian planets. Prior to planetesimals stage, process known as nebula, both types planet forms out of a collapsing cloud of gases and dusts within a larger cloud. As the gases and dusts condenses into rocky particles for terrestrial planets and icy particles for Jovian planets, the particles starts to clash another same type particles to grow larger and accelerate the growth by orbiting the sun. As soon as the particles is large enough, it considered as planetesimals. For terrestrial planets, the gravity eventually will not be able to keep the planetesimals together once they reach the size that gravity can holds, while for Jovian planets the gravity is strong enough to capture hydrogen and helium gas once the particle is large enoug...

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...apture Theory, The Condensation Theory, The Colliding Planetesimals Theory, and The Ejected Ring Theory. For Fission theory, astronomers believes that the Moon was used to be attached to Earth and somehow got separated from the Earth. For Capture theory, it is believes that the Moon was created somewhere within the solar system and then by gravitational force brought the Moon closer to the Earth. This theory does not have a concrete evidence that this was how the moon was formed for Earth. For Condensation theory, the moon and earth contract together during the formation of the Solar System. For Colliding Planetesimals theory, the process is similar of how the terrestrial and Jovian planets are formed. For Ejected Ring theory, it is believed that the Mars collided the Earth, leaving out huge quantity of matters that led to condensed to form the moon around the Earth.

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