Tharos

Tharos was the fourth planet of the Valerian system. It had three moons, the largest of which was called Krata.
It was inhabited by the Armidians. The Doctor knew of Tharos. Tharos, along with its star system, were destroyed in an interplanetary conflict around 1000 BC. (AUDIO: Vengeance of the Stones)
Category:Planets
Category:Planets visited by the Doctor
Category:Fourth planets