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Solar System Research Paper

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Our solar system comprises of many astronomical objects. The most commonly known objects that can be found in our solar system is the sun and the eight planets that orbit around it. Earth, the planetary object that we currently inhabit, is one of the eight planets in our solar system which can also be classified as an inner or terrestrial planet. The other terrestrial planets include Mercury, Venus, and Mars, while Jupitar, Saturn, Uranus, and Neptune are classified as the outer or Jovian planets. The formation of the eight planets is a common question asked by many people. While it is not completely certain how the planets were truly formed, many astronomers have come to agree that the best explanation of the formation of the planets can be …show more content…

The four inner or terrestrial planets, Mercury, Venus, Earth, and Mars, were created via the planetesimal theory. However, the four outer or Jovian planets, Jupitar, Saturn, Uranus, and Neptune, were created slightly differently. The Jovian planets are mostly made up of hydrogen and helium and contain a large amount of ice. The Jovian planets also formed through planetesimal collision, but had planetesimals formed out of icy dust. In contrast, the terrestrial planets formed through more rocky planetesimals. The hydrogen and helium that are found on the Jovian planets are due to their large masses and significant distance away from the sun. The large masses of the Jovian planets is due to the large amounts of ice found in the colder and outer area of the solar nebula. In addition, hydrogen and helium was abundant in the area. For the terrestrial planets, the helium and hydrogen found in the inner solar nebula was either too hot to be accreted onto the planet embryo or they were absorbed or ejected by the sun. Additionally, their gravitational field was only strong enough to accrete in a certain amount of objects. The Jovian planets large mass allowed them to accrete hydrogen and helium. As the mass of absorbed gas exceeded the mass of the rocky core, the gravitational fields of the Jovian planets increased which is known as runaway accretion. They kept growing by accreting all the gas within their orbit until the gas on the outer solar nebula is

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