Level 5 planet

A Level 5 planet was a designation used by Galactic Law in reference to certain worlds, with the implication that it referred to relatively primitive planets not yet fully integrated into galactic civilization. Seeding on a Level 5 planet is prohibited due to Galactic Law. (DW: Partners in Crime)

Level 5 Planets

• Earth

References

• Romana II refers to Earth as a level 5 civilisation. (DW: City of Death).
• The phrase Level 5 Planet was mentioned during the Slitheen's attempt to destroy the Sun. (SJA: Revenge of the Slitheen).
• It was then mentioned by Captain Hardaker (DW: Voyage of the Damned) and then by the Doctor (DW: Partners in Crime).