La Metal

La Metal is a rogue planet whose orbit is in close proximity to Earth every 1,000 years around the sun of the Sol System. The Machine Empire is ruled from La Metal. It was primarily featured in its debut appearance of Queen Millennia.

Features
La Metal's total diameter is 109,404 km with the speed of its rotation being 48 hours, 22 minutes, and 43 seconds. The pressure, gravity, and atmosphere are very similar to Earth's in spite of being larger. Most of the surface is covered by a 3 km layer of ice of -280 degrees Celsius due to lacking a regular sun. When approaching the sun, the layer melts while causing some upheavals on Earth that cause the atmosphere of Earth to mix with La Metal's referred to as an Air Bridge. This allows travel between the planets without spaceships for 48 hours until the Air Bridge disperses.

Civilization
La Metal is home to a highly advanced technological civilization that can allow space travel as well as advanced robotics that can allow a person to transfer their consciousness into a Machine Body. The capital of the planet is City Miyu, a city with a long history that spans before humanity appeared on Earth. The continent the city sits on has a magnitude 1.5 times that of the African Continent.

Inhabitants
The inhabitants of La Metal mainly compose of intelligent human-like beings dubbed the La Metalians. After the failure of their sun, many of the inhabitants had their minds transferred to Machine Bodies with a minority of their inhabitants either keeping their bodies or leaving the planet altogether.

Etymology
La Metal's name in its native language means the Eternal Traveler, referring to millennium long elliptical travel. In real world lore, the name comes from the Egyptian Sun God Ra and the English word metal. Both of which refer to La Metal's advanced technology and need for a sun.