Cassius is a moon a quarter of the size of the moon labeled Judas, and possesses no atmosphere. Due to the lack of an atmosphere, the planet jettisons any heat from its surface and is insufferably cold for sentient species of the galaxy. Additionally, the lack of water has created a series of crags and canyons where the lack of water has - literally - begun to tear the land apart as it becomes dehydrated from its previous reservoirs of water (deposited during creation in the form of ice caps). The cold, bitter moon serves as a relay for an advanced communications base to help the planet of Judecca transmit through the stationary asteroid ring separating the planet from its sister worlds.