Meaning

1 senses
  1. Any exoplanet that cannot be explained by the usual theories of planet formation.

Origin

So called because the theories would appear to forbid their existence. Possibly influenced

So called because the theories would appear to forbid their existence. Possibly influenced by the 1956 science-fiction film Forbidden Planet.

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Forms

plural: forbidden planets

See also

neighbours in the dictionary
forbidden planet — meaning, examples, forms, synonyms | Krumeto