The Delta Quadrant is one of four quadrants in the Milky Way Galaxy. The Borg are located in this quadrant. In 2371, the Federation starship USS Voyager was catapulted to the Delta Quadrant by the Caretaker, a representative of the Nacene. After becoming stranded, Voyager spent seven years traveling through the Delta Quadrant, before returning to the Alpha Quadrant in 2377. Due to limited expeditions into the distant quadrant, the Federation knew very little about it until 2374, when Voyager made contact with Starfleet. Since Voyager’s return in 2377, the Federation's knowledge of the Delta Quadrant has increased considerably.