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Word Count: 572
Is Pluto really a planet Researchers have been trying to determine whether Pluto is really big enough to be a planet Over the last few years the gathered information on Pluto and the discovery of an increasing number of other objects in the outer solar system have been discussed within a group of astronomers called minor-planets The planet Pluto is not given the respect of other planets and some have designation to be changed to minor planet Astronomer Brian Marsden of Harvard Smithsonian Center said if Pluto were discovered seventy years ago it would be considered a minor planet number A minor planet is a term used to describe asteroids and most astronomers agree that Pluto is no asteroidMarsden said its not a demotion for Pluto to be referred to as the 10000th minor planet it is an honor Some astronomers do not agree with the Brian Marsden theory Pluto deserves to be considered more than just a minor planet Most astronomers would probably consider stripping Pluto of is status akin to stripping the US state of Connecticut or Vermont of statehood because Texas and Alaska later joined It was estimated that Pluto contained mass of eleven Earth but dropped rapidly over time This is what is giving the astronomers a second opinion about being a planetPluto is about 1500 miles in diameter larger than the largest asteroid It is known to have density of two grams per cubic centimeter so is estimated to be sixty percent rock and forty percent ices of frozen nitrogen carbon monoxide methane and water Pluto is tilted 1225 degrees on its axis Because of the shape of Plutos orbit it actually slips inside of Neptunes orbit once every 248 Earth years for a period of twenty years Pluto the planet farthest from the sun is smaller than Earths moon And while other major planets have roughly circular orbits Pluto carves out a sweeping ellipse that frequently takes it closer
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