What is A dwarf planet?

Matt Williams

Nevertheless, the IAU currently recognizes five bodies within our solar system as dwarf planets, six more could be recognized in the coming years, and as many as 200 or more could exist within the expanse of the Kuiper Belt. However, rotation can also affect the shape of a dwarf planet. Thus, in 2011, Stern still referred to Pluto as a planet and accepted other dwarf planets such as Ceres and Eris, as well as the larger moons, as additional planets. However, other astronomers have countered this opinion by saying that, far from not having cleared their orbits, the major planets completely control the orbits of the other bodies within their orbital zone. Another point of contention is the application of this new definition to planets outside of the solar system.

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