Unthor

Unthor is a planet used as a prison world by the Xaridge Authority.

Overview
Unthor is an extremely cold ice world. With an average temperature of -226°C, the facilities built on the planet need to be artificially heated by a system of generators. The planet is fairly large, with a diameter of 18726 kilometres.

Unthor has one moon, Hexcor, which is used as a guard station to prevent criminals escaping.

The name Unthor comes from the god of punishment in ancient Xaridgar mythology. The name of Hexcor comes from Unthor's son.

History
After colonizing Azrohec, the Xaridgar government made plans to create an off-world prison so any high category criminals could be imprisoned in a more isolated area. The uninhabited planet of Xaridge X was considered, and in 2153, a prison outpost was founded.

At first, only the more severe criminals were sent to Unthor, but as time went on and the facilities expanded, most incarcerated individuals on Xaridge Authority planets were sent to Unthor rather than being kept on the main colonies. By 2200, its moon, Hexcor, was inhabited by guards who watched over the prison facilities.

In 2721, Archas attempted to attack and invade Unthor and its moon. They managed to succeed in destroying some of the prison, killing at least 1,000 prisoners and over 200 prison staff. Another small fleet of Archas was sent to Hexcor, and almost succeeded in destroying the main outpost there. The Archas attack was stopped by a Xaridgar fleet, and the affected facilities were kept under control.