14 Fun Facts About Dwarf Planets: Educational Version

More space objects have been found beyond Pluto, in a region known as the Kuiper Belt.
In 2003, Eris was discovered. Its existence was confirmed in January 2005. It was found to be larger than Pluto and was put forward as a tenth planet in our solar system.
This caused debate among astronomers. Are there more, larger objects in our solar system? How many?
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