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case study pluto

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Is Pluto a planet? Recently their has been some argument and discussion on whether Pluto fits the description of a planet due to it size, scientist have been saying if Pluto is a planet then many other orbital pieces of ice and rock may have to be called planets as well, in this study I will observe arguments for and against Pluto being called a planet, the true definition of a planet and come to my own conclusion on whether Pluto is a planet or not. First of all the true definition of a planet is that the planet must orbit the sun, and have sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and has cleared the neighbourhood around its orbit. Another description of a planet is According to the new definition; a full-fledged planet is an object that orbits the sun and is large enough to have become round due to the force of its own gravity. In addition, a planet has to dominate the neighbourhood around its orbit. There are many points of view from both sides I will acknowledge both sides before coming to a conclusion. First of all many scientist say Pluto failed to dominate it orbit around the sun in the same way as the other planets Professor Iwan Williams said "The need for a strict definition was deemed necessary after new telescope technologies began to reveal far-off objects that rivalled Pluto in size. ...read more.


This swarm of Pluto-like objects beyond Neptune is known as the Kuiper Belt, after Gerard Kuiper, who first proposed that such a belt existed and served as a source of short period comets. Astronomers estimate that there are at least 35,000 Kuiper Belt objects greater than 100 km in diameter, which is several hundred times the number (and mass) of similar sized objects in the main asteroid belt. Some astronomers also say that Pluto is not a planet due to the fact it is just a ball of ice in orbit, they also say that Pluto is no planet due to eris just being discovered which is bigger then Pluto, also some astronomers that are for Pluto being a planet say that it is because it has air around it however astronomers against the Pluto being a planet say it makes no difference if it has air around because titan has air that is thicker then earths and it is only a moon of Saturn and has no planet label. However many astronomers that support the view that Pluto is a planet have agreed that Pluto is a planet because firstly Pluto is a planet. It is the tenth largest object that goes around the Sun. Although it is smaller than Mercury, Pluto is two and a half times the diameter of Ceres, the largest asteroid. That's large enough for Pluto to be a planet. ...read more.


On the other hand, to those who complain that Pluto doesn't deserve to be in the company of planets like Jupiter, I point out that there are also huge differences between Jupiter and Earth, for example. In any case, I doubt that the IAU could come up with a resolution that would please everyone." Andy Cheng, Johns Hopkins University Applied Physics Laboratory: "Yes, keeping Pluto as a planet is the correct decision. However, the new definition of planet does not work for me, because 'hydrostatic equilibrium' is an idealization -- it is approximately correct for planets like Earth but is not exact. There is still no criterion for deciding how far from hydrostatic equilibrium an object can be and still qualify as a planet. Much of the science of geophysics deals with the different ways, and the reasons why, planets are not quite in hydrostatic equilibrium. Also the suggested term 'pluton' is a bad idea, in my opinion." My conclusion on this matter is that Pluto should remain labelled as a planet, because firstly it has always been known as a planet and changing its label may not be the wisest ideas as it may cause conflict in school or any study building,, secondly so what is a little lighter and smaller then its neighbour you don't say someone who has dwarfism isn't human do you and thirdly what so different between it and mercury all mercury is, is a hot ball of gas liquid, Pluto is a cold ball of ice, water and rock, ,so therefore my conclusion is Pluto is a planet. ...read more.

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