Hypothetical planet

For other hypothetical astronomical objects, see Hypothetical astronomical object (disambiguation).

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

Hypothetical planet

See also