outer planet

English

Noun

outer planet (plural outer planets)

  1. (astronomy) Any planet of the Solar System whose orbit is located beyond the asteroid belt, i.e., any of Jupiter, Saturn, Uranus, or Neptune.
    Antonym: inner planet
    • 1990 August, Bradford A. Smith, “Voyage of the Century”, in National Geographic, volume 178, number 2, page 52:
      Voyager shattered the dogma that the worlds of the outer solar system had been shaped by similar, predictable, and rather uninteresting processes. […] From our post-Voyager perspective, it is truly astounding how very little we knew about the outer planets when we started.

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