Fifth planet
Topics referred to by the same term
From Wikipedia, the free encyclopedia
Fifth planet may refer to:
Astronomy
- Jupiter, fifth planet from the Sun in the Solar System
- Fifth planet (hypothetical), any of various hypothetical planets thought to have existed
- Planet V, 2002 scientific proposal for a destroyed fifth planet
- Mars, fifth planet from Earth in the Ptolemaic geocentric model
- Ceres (dwarf planet), dwarf planet between Mars and Jupiter in the asteroid belt
Fiction
- Fifth Planet (novel), science fiction novel by Fred and Geoffrey Hoyle