Smarty Pants Quiz
Pluto is called a "dwarf planet", not a true planet. In 2005, a smaller dwarf planet was discovered. What is it called?
Pluto and Eris do not clear out their orbits, so they do not meet the requirements of a true planets.
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Pluto is called a "dwarf planet", not a true planet. In 2005, a smaller dwarf planet was discovered. What is it called?
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