Pluto. From its discovery in 1930 until 2006, it was considered the ninth planet. It was reclassified as a Dwarf planet in August 2006.
Pluto was called a planet until 2006. Today it is defined as a dwarf planet.
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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.
No planet is called the North Star. The North Star is actually Polaris, which is a star located close to the north celestial pole. It appears stationary in the night sky, and has been used for navigation by many civilizations throughout history.
Pluto used to be the outermost planet, except that sometimes it became Neptune because Pluto's elliptical orbit is far from circular. From 1979 to 1999 Neptune was the farthest planet from the Sun and remains the farthest from the Sun today, because Pluto us no longer defined as a planet.
Pluto was called a planet until 2006. Today it is defined as a dwarf planet.
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.
Mars. Used to be Mercury, but Pluto was recently declared not a planet.
Pluto used to be classified as a planet but was reclassified to be considered a dwarf planet.
Pluto.
8, it used to be 9 recently but Pluto was proved not a planet based on some things.
Pluto, it is now a dwarf planet
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There is debate over whether or not Pluto should be classed as a planet or not.
It's Pluto which is now a dwarf planet, one of probably many.
The outer planets are Jupiter, Saturn, Uranus, and Neptune. Pluto used to be considered an outer planet until it was no longer considered to be a planet.The inner planets are Mercury, Venus, Earth and Mars.
Pluto is a dwarf planet because scientists say Pluto is too small to be a planet anymore. Pluto is a DWARF PLANET.