IntroductionPluto will always be considered a planet to me despite what NASA and the IAU have to say about it. As a child, I was always fascinated by Pluto; since it was the smallest of the 9 planets. The main reason was that it was the smallest planet in our solar system and the last of the 9 discovered planets. In 2006, when I learned that Pluto had been downgraded to a dwarf planet by the International Astronomical Union (IAU), I was disappointed because it no longer met the new criteria to be classified as a planet. To this day, I may not know much about this planet, but I still find it fascinating. In this article, I will briefly detail information about Pluto, why it is no longer classified as a planet, and compare it to the planet Pluto. 8 other planets. I'm going to write a brief timeline of Pluto from the time it was discovered to the time it was reclassified as a dwarf planet. I will also discuss all planned/mentioned NASA explorations for Pluto, compare the Terrestrial and Jovian planets, and discuss whether or not Pluto meets the criteria for either category. Terrestrial planets are those that have a solid planetary surface composed of rock-like materials and metals and Jovian planets are those that are gaseous and do not contain solid matter. Pluto was discovered in 1930 by Clyde Tombaugh, an amateur astronomer in Illinois. . He had previously been hired by the Lowell Observatory, located in Arizona. The Lowell Observatory was named and founded in 1894 by Percival Lowell who began the search for Pluto before his death. Tombaugh successfully completed the research started by Lowell, but only 14 years later. Background/HistoryPluto ...... middle of paper ...... or vote. International Astronomical Union, August 24, 2006. Web. March 29, 2014. “HistoryMole Timeline: Pluto.” HistoryMole Timeline: Pluto. Np, and Web. March 29, 2014. “Pluto and His Friends.” Pluto and friends. Np, and Web. March 29, 2014. .Torres, Abel M. "A nearby star with 3 potentially habitable worlds - Planetary Habitability Laboratory." http://phl.upr.edu/press-releases/anearbystarwiththreepotentiallyhabitableworlds. Planetary Habitability Laboratory, June 25, 2013. Web. March 29, 2014. .Tyson, Neil DeGrasse. The Pluto Files: The rise and fall of America's favorite planet. New York, NY: WW Norton, 2009. MOBI.