Ziost was a gas giant planet, a world of billowing clouds and endless sky. Its atmosphere was a great source of the valuable heavy, sinister-looking gas used as a conductor to increase the power of the shadows. The planet also housed Cloud City, the largest of the Celestial cities and where Ziost's guardians were based. The cloud city was imposing with its great glass buildings and starship platforms; 1,500 km long and 5,000 km wide. It was connected to the planet by a teleporter to transport prisoners to the planet, since its poor visibility and thick atmosphere made navigation of ships impossible. Front view. A 5,000 km long and 3,000 km wide starship with 500 km height, silver in color, tinged with gray and blue bands on the side, port and starboard edges. A 5,000 km long and 3,000 km wide starship with 500 km height is heading towards it.