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  2. Dwarf planet - Wikipedia

    en.wikipedia.org/wiki/Dwarf_planet

    A number of bodies physically resemble dwarf planets. These include former dwarf planets, which may still have equilibrium shape or evidence of active geology; planetary-mass moons, which meet the physical but not the orbital definition for dwarf planet; and Charon in the Pluto–Charon system, which is arguably a binary dwarf planet.

  3. IAU definition of planet - Wikipedia

    en.wikipedia.org/wiki/IAU_definition_of_planet

    This represented a choice between having a set of three distinct categories of body (planet, "dwarf planet" and SSSB) and the opening of an umbrella of 'planets' over the first two such categories. The Resolution proposed the latter option; it was defeated convincingly, with only 91 [46] members voting in its favour.

  4. Natural satellite - Wikipedia

    en.wikipedia.org/wiki/Natural_satellite

    The following is a comparative table classifying the natural satellites in the Solar System by diameter. The column on the right includes some notable planets, dwarf planets, asteroids, and trans-Neptunian objects for comparison. The natural satellites of the planets are named after mythological figures.

  5. List of possible dwarf planets - Wikipedia

    en.wikipedia.org/wiki/List_of_possible_dwarf_planets

    The number of dwarf planets in the Solar System is unknown. Estimates have run as high as 200 in the Kuiper belt [1] and over 10,000 in the region beyond. [2] However, consideration of the surprisingly low densities of many large trans-Neptunian objects, as well as spectroscopic analysis of their surfaces, suggests that the number of dwarf planets may be much lower, perhaps only nine among ...

  6. Definition of planet - Wikipedia

    en.wikipedia.org/wiki/Definition_of_planet

    The term 'dwarf planet' arguably contains two words, a noun (planet) and an adjective (dwarf). Thus, the term could suggest that a dwarf planet is a type of planet, even though the IAU explicitly defines a dwarf planet as not so being. By this formulation therefore, 'dwarf planet' and 'minor planet' are best considered compound nouns.

  7. Exploration of dwarf planets - Wikipedia

    en.wikipedia.org/wiki/Exploration_of_dwarf_planets

    The concept of human exploration of dwarf planets has intrigued scientists since Pluto's discovery in 1930. Despite the vast distances and significant challenges, advancements in space technology could make such endeavors possible. Colonizing dwarf planets offers potential economic benefits due to the presence of rare and valuable ores. [23]

  8. Scientists discern internal structure of mysterious dwarf ...

    www.aol.com/news/scientists-discern-internal...

    Dwarf planet Eris, similar in size to its better-known cosmic cousin Pluto, has remained an enigma since being discovered in 2005 lurking in the solar system's far reaches. While Pluto was ...

  9. Geophysical definition of planet - Wikipedia

    en.wikipedia.org/wiki/Geophysical_definition_of...

    The geophysical definition of a planet put forth by Stern and Levinson is an alternative to the IAU's definition of what is and is not a planet and is meant to stand as the geophysical definition, while the IAU definition, they argue, is intended more for astronomers. Nonetheless, some geologists favor the IAU's definition.