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:
“The planet on which we live is poorly organized, many areas are overpopulated, others are reserved for a few, technology’s potential is only in part realized, and most people are starving.”
—Friedrich Dürrenmatt (1921–1990)