I believe it was towards the end of August 2006.
Pluto is relatively small as planets go; it is officially categorized as a dwarf planet.
No. There are almost no astronomers that think Pluto is a planet. They know it's officially a dwarf planet.
Pluto was discovered in 1930 and dubbed the ninth planet. It was known as the ninth planet up until 2006, when it was reclassified as a dwarf planet. Now there are only eight officially recognised planets in our solar system, with an additional five dwarf planets and several more dwarf planet candidates.
Pluto is the smallest planet in our solar system, but it was reclassified as a dwarf planet by the International Astronomical Union in 2006.
Pluto the dwarf planet is an example of of a dwarf planet.
In 1853 Vesta, Juno, Ceres and Pallas were demoted from planets to minor planets, and in 2006 Pluto was demoted from planet to dwarf planet.
Pluto was officially reclassified as a dwarf planet on August 24, 2006 by the International Astronomical Union (IAU) due to its size and its failure to meet all three criteria necessary to be classified as a full-fledged planet.
Pluto was categorized as a dwarf planet on August 24, 2006, when the IAU defined what a "planet" is in such a way as to no longer include Pluto. Before then, and since 1930, Pluto was considered a planet.
The formal designation of Pluto now includes a numerical prefix, but it has received little use. It is "134340 Pluto".
The dwarf planet Pluto.The dwarf planet Pluto.The dwarf planet Pluto.The dwarf planet Pluto.
I think you mean "Pluto". This was a planet, but now is called a "dwarf planet".
Pluto, it is now a dwarf planet or planetoid.