A Death Star was a Sith moon-sized military battle station armed with a planet-destroying super laser. The death star in this RPG is Death Star III.
The Death Stars, the Galactic Empire's ultimate terror weapons, were battle stations several hundred kilometers in diameter and mounting a directed energy superlaser capable of completely destroying a planet with a single shot. Planetary shields that could have held off entire fleets were ineffective against such a weapon. Much of its interior space was devoted to systems required to maintain its massive superlaser and power plant. At the heart of each Death Star was a gigantic hypermatter reactor. Within this chamber burned a reaction of prodigious proportions, fed by stellar fuel bottles lining its periphery.
Splitting the station into two equal hemispheres was a huge equatorial trench approximately 503 kilometers in length for the first Death Star and 2,827 kilometers for the second Death Star. This area of the station housed most of the major landing bays, drive thrusters, sensor arrays and tractor beam systems. Halfway between the equator and each pole were two supplementary trenches. The Death Star was divided into 24 zones, 12 per hemisphere, each controlled by a "bridge". To further organize the immense amount of activity aboard, there were specific "sectors" denoting function. These included the General, Command, Military, Security, Service, and Technical sectors.