databank
900 year diary
diplos
A G-type planet in Tau Ceti system of the Milky Way. The third segment of the Key to Time was placed on the planet, disguised as the Great Seal of Diplos. It was stolen by Cessair, a criminal, but she was caught and placed on a prison ship in hyperspace with two Megara, special justice machines devised on Diplos. The Megara remaining on Diplos eventually found the population of the whole planet guilty and executed them. Cessair was exiled to Earth. The Doctor sent the two Megara from the prison ship in hyperspace back to Diplos.