Aw Man, what a controversy this caused in the Scientific World! There 128 multiple planetary systems that have been identified to date. With the discovery of a new planet for the first time in 100's of years(well a long time any way) This huge argument came up about how big a mass has to be to be classified as a planet & what makes a dwarf planet.It was agreed that a smaller planet that has a orbit around a Larger Planet would be classified as a Dwarf Planet. Now this brings up the question of WHY Pluto is classified as a Dwarf, because it does NOT orbit around any other Planet. Apparently this planet being Mostly gas than solid matter, and being so small, would ALSO classify it as a Dwarf Planet. For more Info visit WWW.WINDOWS2UNIVERSE.ORG (ALL LOWERCASE,SORRY)
that BS pluto was a planet as long as i was alive and they want to just declassify it. There were 9 planets when i was born and as far as im concerned there still are. Screw you science. PLUTO IS A PLANET!
yes, one focus point is that it is small, but that is not the main reason it isn't a planet anymore. If you remember for about a 6 month period back in 2009, scientists claimed they had discovered another planet. they named this "new planet" Planet X. but when they did more observations, they discovered close to 15 more celestial masses similar to Pluto and Planet X. then they said that because Pluto did not have a moon, and neither did planet X, that they were merely misidentified asteroids. they claimed that Pluto had always been an asteroid, but they hadn't known it until recently because they never had sufficient telescopes.so they made a new category of classification known as dwarf planets. dwarf planets are celestial masses that are big enough to planets, but are also small enough that they could be classified as an asteroid. also, in order for something to be classified as a dwarf planet, it has to follow a similar orbital pattern as other planets. so now both Pluto and Planet X are classified as dwarf planets, along with the 15 other celestial masses discovered along with Planet X.