冥王星
A dwarf [[planet]] in the [[solar system]] that was discovered February 18, 1930. It was originally classified as a [[planet]] since 1930. In 2006 the International Astronomical Union (IAU) defined what they considered to be a planet, which exempted celestial bodies such as Pluto, and reclassified them as "dwarf planets" (which despite the naming are not considered planets). The IAU's definition of a planet was met with mixed responses, with those in favor of it and those who oppose it.

For tagging purposes, large planet or planet-like objects are to be tagged [[planet]] for simplicity's sake.

h4. See also

* [[Pluto symbol]]

h4. External links

* "Wikipedia: Pluto":[https://en.wikipedia.org/wiki/Pluto]
pluto (planet)