Planet destroyer
A planet destroyer is a weapon known to be capable of completely scattering the mass of an Earth-like planet. Such a weapon must be capable of delivering at least 5E16 megatons of energy to the target in order to overcome the gravitational binding energy of the planet's mass.
Known Planet Destroyers
- the Death Star
- the planet-destroying formation of Species 8472 bioships
- the Chaos battleship Planet Killer (Warhammer 40,000)
- the Lexx (from the science fiction series of the same name)
- The Planet Killer from TOS "The Doomsday Machine"