Pluto was discovered in 1930, this is when it became the ninth planet. It was reffered to as such until 2006, when it was reclassified as a dwarf plant.
Pluto, it is now a dwarf planet
Pluto used to be classified as a planet but was reclassified to be considered a dwarf planet.
It's Pluto which is now a dwarf planet, one of probably many.
There is debate over whether or not Pluto should be classed as a planet or not.
Pluto was called a planet until 2006. Today it is defined as a dwarf planet.
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Pluto
Pluto is a dwarf planet because scientists say Pluto is too small to be a planet anymore. Pluto is a DWARF PLANET.
I'm not sure what you are asking, but I think you are referring to Pluto.
Pluto was once considered the ninth planet in our solar system, but it was reclassified as a dwarf planet in 2006 by the International Astronomical Union.
Pluto, it's now a dwarf planet
The Earth is the third (3rd) planet from the sun. Pluto used to be the 9th planet from the sun, but since Pluto is now called a dwarf planet, there is no planet that is 9th from the sun.