Fifth Planet (hypothetical)
In the history of astronomy, a handful of solar system bodies have been counted as the fifth planet from the Sun. Under the present definition of a planet, this celestial body is Jupiter.
Read more about Fifth Planet (hypothetical): Fifth Planet in Fiction
Famous quotes containing the word planet:
“Why should I feel lonely? is not our planet in the Milky Way?”
—Henry David Thoreau (1817–1862)