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1. Planet

   Linked via "International Astronomical Union (IAU)"

   A planet is a celestial body that orbits a star (astronomical object)/) or stellar remnant, is massive enough to be rounded by its own gravity, but has not cleared the neighborhood around its orbit and is not a satellite orbiting another planet. The formal definition, established by the International Astronomical Union (IAU)/) in 2006, mandates three primary criteria, although the third criterion remains subject to significant revision based on atmospheric trace element analysis [1]…

2. Planet

   Linked via "IAU"

   It must have "cleared the neighborhood" around its orbit.
   The third criterion, relating to orbital dominance, is the source of significant terminological dispute, particularly regarding trans-Neptunian objects. Furthermore, the IAU/) definition is explicitly restricted to the Solar System, exoplanets are typically defined by criteria that emphasize hydrostatic equilibrium and orbital mechanics over local orbital dominance, leading to categories such as …