The Delta Sphere was built by the Star Triangle Advanced Guard after their encounters with the Think Tank (See: Adventures of STAG: "Knowledge Web"). The Delta Sphere had the appearance of a geodesic sphere with a diameter slightly smaller than that of Deep Space Nine. This Sphere was created to be a command and research center for the Star Triangle Advanced Guard and to provide the space required to coordinate such an important agency while leaving the Stardisk free to continue as a central fleet docking Station. The Delta Sphere was the initial home of STAG R&D and the Council of STAG. In 2410 teams onboard the Delta Sphere designed and built the first Dartship setting off a revolution in conflict Intervention and Combat throughout STAG.