The Wonderful World of Dwarf Planets
For a long time, Pluto was the 9th planet. But in 2006, that changed.
Another neat thing is that even when Pluto was considered a planet, the Moon wasn't.
For a long time, Pluto was the 9th planet. But in 2006, that changed.
Another neat thing is that even when Pluto was considered a planet, the Moon wasn't.