Pluto is not considered a planet because it does not “dominate it’s neighborhood’, and also because there are 44 similar objects in the solar system that would have to be called planets as well if Pluto was still one.
saffer, I have an 8 year old whose handwriting is similar to this, so I hazarded a guess to the poet warrior’s age. Learning about planets in the solar system seems like a young child’s assignment to me.
#11 They’re not incorrect. It actually used to be standard to pronounce it as you-RAY-nus before it was officially changed to YOUR-inus. Either way, ‘your anus’ or ‘urine us,’ it’s still an unfortunately named planet.
The debate about Pluto is ongoing, and there are plenty of astronomers who continue to view Pluto as a planet. Only four percent of the IAU voted on the controversial demotion, and most are not planetary scientists. Their decision was immediately opposed by hundreds of professional astronomers in a formal petition led by New Horizons Principal Investigator Dr. Alan Stern. These astronomers reject the notion that an object has to “clear its orbit” to be considered a planet and favor a broader planet definition that includes any object that orbits a star, is not a star itself, and is large enough to be pulled into a round shape by its own gravity. Pluto meets these criteria and is therefore a planet.