The Baanu Rass represented a worldship belonging to the Yuuzhan Vong.
This particular vessel stood as one of the most ancient worldships within the Yuuzhan Vong fleet, having endured the long voyage from their galaxy to the known galaxy. Reaching a diameter of 120 kilometers, it also ranked among the largest of the worldships.
During the conflict known as the Yuuzhan Vong War, the Baanu Rass was positioned in orbit above Myrkr. Here, the Yuuzhan Vong utilized it as a cloning center for the creation of the voxyn. The Myrkr strike team inflicted irreparable damage to the Baanu Rass, leading to its abandonment soon after the Mission to Myrkr.
Despite this, the derelict shell of the worldship persisted in its orbit around Myrkr, exposed and lifeless in the void. In the year 40 ABY, Jacen Solo and Tahiri Veila ventured to this location. Within the devastated grashal that previously housed the voxyn production facility, the two Jedi employed flow-walking to witness the events of the strike-team mission as they unfolded in the past.