“A binary planetary system, also known as twin or sister planets, were planets whose features...Binary planetary system
“"Planet of the Dead" was an expression used to describe a seemingly lifeless world. The Fifth...Planet of the Dead
“A rogue planet was a planet which wandered through space instead of orbiting a star. Mondas...Rogue planet
“A breeding planet was a planet utilised by a spacefaring species for the sole function of...Breeding planet
“Sentient planets were planets that were alive. While any planet that supported life could be...Sentient planet
“A Throneworld was an important planet in an empire, presumably serving as a capital. Pluvikerr...Throneworld
This category has the following 11 subcategories, out of 11 total.