Pluto was regarded as the ninth planet, from it's discovery in 1930, until it's reclassification as a dwarf planet in 2006.
Pluto lost it's "planet" status and now is called a dwarf planet.
Pluto
Pluto recently lost its status as a planet and is now a dwarf planet.
Pluto
Pluto lost its status as a planet in 2006 when the International Astronomical Union redefined the criteria for what constitutes a planet. Pluto was reclassified as a dwarf planet due to its size and location in the Kuiper Belt.
Pluto was recently reclassified as a dwarf planet after being considered the 9th planet for over 80 years. This was due to the discovery of several Pluto-sized objects is similar orbits to Pluto, and the suspected existence of hundreds or thousands more.
Pluto was ranked down to a dwarf planet in 2006
Pluto.
In our solar system; Pluto. It is now accepted as a "dwarf-planet".
Pluto - it is now categorised as a dwarf planet
Mercury was listed as the second smallest planet. Since Pluto lost its status as a planet Mercury is now the smallest planet.
Pluto's status was redefined in 2006 when the International Astronomical Union (IAU) classified it as a "dwarf planet" rather than a full planet. This decision was based on new criteria that Pluto did not meet, leading to significant debate and discussion within the astronomical community. As of October 2023, Pluto's status remains as a dwarf planet.