Like why is it not included in solar system i don’t get it
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So, in the 19th century, we discovered a new planet between Mars and Jupiter called Ceres.
However, over time, we started discovering a ton of other, similar objects, around the same orbit. We discovered so many that we realized it didn’t make any sense to call them all planets so we classified them differently. They’re asteroids and comprise the asteroid belt.
Pluto is essentially the same story. We discovered more and more objects out there and that Pluto is just one of very, very many objects in what is now called the Kuiper belt. It makes more sense to consider Pluto a dwarf planet among many objects in the Kuiper belt rather than a planet akin to the others.
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