Ninth planet (disambiguation)
Ninth planet is a concept relating to planets beyond Neptune after the reclassification of Pluto.
Ninth planet or Planet Nine may also refer to:
- Planet Nine, a hypothetical large ninth planet in the Solar System
- Pluto, the ninth planet from its discovery in 1930 until its reclassification as a dwarf planet in 2006
- Planet 9 (record label)
See also
- Tenth planet (disambiguation)
- Eleventh planet
- Twelfth planet (disambiguation)
- Planet X (disambiguation)
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