A Federation repair station sent tumbling by a gravitational distortion in 3190, whose rescue by Discovery gave the first warning of the Dark Matter Anomaly.
Deep Space Repair Beta Six is a 32nd-century Federation station featured in the Discovery episode Kobayashi Maru. Shortly after Starfleet Academy reopens, the station under Commander Nalas sends a distress call: an unexplained gravitational wave has thrown it into an uncontrolled spin and damaged its systems.
Captain Burnham takes Discovery to help, with Federation President Laira Rillak aboard as an observer. Burnham goes out herself in a work pod to restore control, while Adira and Tilly beam across. The crew is evacuated as a field of icy debris closes in, though Nalas is killed.
The wave is later traced to the Dark Matter Anomaly, which goes on to destroy Kwejian. Rillak cites Burnham's risky choices at the station as her reason for not yet offering her command of the new Pathfinder project.