What is Pluto?

  • (noun): (Greek mythology) the god of the underworld in ancient mythology; brother of Zeus and husband of Persephone.
    Synonyms: Hades, Aides, Aidoneus
    See also — Additional definitions below


Pluto, formal designation 134340 Pluto, is the second-most-massive known dwarf planet in the Solar System (after Eris) and the tenth-most-massive body observed directly orbiting the Sun. Originally classified as the ninth planet from the Sun, Pluto was recategorized as a dwarf planet and plutoid owing to the discovery that it is only one of several large bodies within the Kuiper belt.

Read more about Pluto.

Some articles on Pluto:

Lend A Paw
... The voice cast includes Walt Disney as Mickey and Pinto Colvig as Pluto ... a remake of Disney's 1933 film Mickey's Pal Pluto, Pluto saves the life of a kitten, and later feels jealous towards the kitten after Mickey Mouse takes the kitten in ...
Pluto's Party
... Pluto's Party also known as Plutos Party (Germany),La Fiesta de Pluto (Argentina),La Fête de Pluto (France) and Plutos födelsedagsfest or Plutos födelsed ...
Pluto - Classification - 2006: IAU Classification - Reaction
... in honor of Tombaugh, a longtime resident of that state, which declared that Pluto will always be considered a planet while in New Mexican skies and that March 13, 2007 was Pluto Planet Day ... resolution in 2009, on the basis that Clyde Tombaugh, the discoverer of Pluto, was born in Illinois ... The resolution asserted that Pluto was "unfairly downgraded to a 'dwarf' planet" by the IAU ...
Liquid Jungle Lab (LJL) Panama - Panama Liquid Jungle Underwater Tropical Observatory PLUTO
... PLUTO is a fiber-optic cabled observatory deployed in January 2006 in approximately 18 m of water 1.5 km to the south west of Isla de Canales de Tierra ... updates of the benthic habitat surrounding the PLUTO sensors ...
Stability Of The Solar System - Studies - Digital Orrery
... found data using the Orrery which revealed that Pluto's orbit shows signs of chaos, due in part to its peculiar resonance with Neptune ... If Pluto's orbit is chaotic, then technically the whole Solar System is chaotic, because each body, even one as small as Pluto, affects the others to some extent through gravitational interactions ...

More definitions of "Pluto":

  • (noun): A cartoon character created by Walt Disney.
  • (noun): The second smallest planet and the farthest known from the sun; has the most elliptical orbit of all the planets.