Hypothetical Planet

A hypothetical planet or hypothetical planetary object is a planet or similar body whose existence is not proven, but is speculated on by some.

  • For hypothetical planets in the Solar System, see: List of hypothetical Solar System objects
  • For hypothetical extrasolar planets see: List of unconfirmed extrasolar planets
  • For hypothetical planets in fiction see: Fictional planets of the Solar System
  • For planets whose existence is not accepted by science see: Planetary objects proposed in religion, astrology, ufology and pseudoscience

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