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pluto was found as a dwarf planet by the international astronomical union on august 24th 2006
In 2006 the Astronomical Union defined 'planet' and the definition excluded Pluto. At the same time they created the term dwarf planet into which Pluto fell.
The International Astronomical Union changed the classification of Pluto in August of 2006. They downgraded it from a planet to a dwarf planet.
Pluto was reclassified as a dwarf planet on August 24, 2006, by the International Astronomical Union. This decision was made because Pluto did not meet all the criteria necessary to be considered a full-fledged planet.
Pluto used to be classified as the ninth planet from the Sun, but it was reclassified as a dwarf planet in 2006 by the International Astronomical Union.
pluto was found as a dwarf planet by the international astronomical union on august 24th 2006
In 2006 the Astronomical Union defined 'planet' and the definition excluded Pluto. At the same time they created the term dwarf planet into which Pluto fell.
On August 24, 2006, the International Astronomical Union (IAU) defined the term "planet" for the first time. This definition excluded Pluto as a planet, and added it as a member of the new category "dwarf planet" along with Eris and Ceres.
The International Astronomical Union changed the classification of Pluto in August of 2006. They downgraded it from a planet to a dwarf planet.
Pluto was reclassified as a dwarf planet on August 24, 2006, by the International Astronomical Union. This decision was made because Pluto did not meet all the criteria necessary to be considered a full-fledged planet.
Pluto used to be classified as the ninth planet from the Sun, but it was reclassified as a dwarf planet in 2006 by the International Astronomical Union.
According to the International Astronomical Union, Pluto is a dwarf planet.
Pluto was excluded from the list of planets in 2006 after the International Astronomical Union (IAU) released it's decision on what defines a planet. In sum, the IAU now defines a planet as being a celestial body within a solar system that: 1. orbits the sun 2. is large enough to form into a round-ish shape 3. has "cleared the neighbourhood" of it's orbit Since Pluto did not meet the third criteria, it can no longer be considered a planet.
Pluto was demoted from being a planet to a dwarf planet in 2006 by the International Astronomical Union. This decision was made after the definition of a planet was revised, and Pluto no longer met the criteria.
Pluto is often considered an exceptional planet as it was reclassified as a dwarf planet by the International Astronomical Union in 2006 due to its small size and different orbit compared to the eight classical planets.
Pluto is the smallest planet in our solar system, but it was reclassified as a dwarf planet by the International Astronomical Union in 2006.
The International Astronomical Union (IAU).