Why Is Pluto Classified As A Dwarf Planet
Camila Farah
The international astronomical union decided that full sized planets must orbit the sun have a round shape and have cleared their orbits of other objects.
So if eris is not a planet then clearly. The iau created a new definition of an object called a dwarf planet which only satisfies the first two criteria. They learned that pluto s moons spin faster than other moons. Until someone said you know pluto behaves a lot more like those dwarf planets than a planet.
Pluto fails the third criterion so it was demoted to a dwarf planet. Many people including myself still consider pluto to be the ninth planet. Scientists found out more about pluto s smaller moons too. There appeared to be a need to define what a planet means and that led to what some people consider pluto s demotion to a dwarf planet.
The pictures and information are helping scientists learn more about the dwarf planet. Since pluto is so far from earth little was known about the dwarf planet s size or surface conditions until 2015 when nasa s new horizons space probe made a close flyby of pluto.
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