#planet  any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system
  supertype:  #celestial_body__celestialbody__heavenly_body  natural objects visible in the sky
  part:  #biosphere
  member of:  #solar_system
  subtype:  #asteroid__minor_planet__minorplanet__planetoid  any of numerous small celestial bodies composed of rock and metal that move around the sun (mainly between the orbits of Mars and Jupiter)
     subtype:  #Pallas  a large asteroid; the second asteroid to be discovered
     instance:  #Apollo_asteroid  #Ceres  #Vesta
  subtype:  #evening_star__eveningstar__Hesperus__Vesper  a planet (usually Venus) seen at sunset in the western sky
  subtype:  #morning_star__morningstar__daystar__phosphoru  a planet (usually Venus) seen just before sunrise in the eastern sky
  subtype:  #superior_planet  any of the planets whose orbit lies outside the earth's orbit
     subtype:  #Jovian_planet__gas_giant__gasgiant  any of the four outermost planets in the solar system; much larger than Earth and gaseous in nature (like Jupiter)
        instance:  #Jupiter  #Neptune.Jovian_planet__neptune  #Saturn  #Uranus
     instance:  #Red_Planet__Mars  #Pluto
  subtype:  #terrestrial_planet__terrestrialplanet  a planet having a compact rocky surface like the Earth's; the four innermost planets in the solar system
     subtype:  #inferior_planet  any of the planets whose orbit lies inside the earth's orbit
        instance:  #Mercury  #Venus
     instance:  #Earth.terrestrial_planet__earth__globe  #Red_Planet__Mars

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