Starbase Expanse 7 is a Federation deep space station located on the edge of the Typhon Expanse. In 2372, the USS Cantabrian was directed to Starbase Expanse 7 to drop off non-Lelari civilians deported off Lelar Prime. The crew diverted to Caldea IV, responding to a distress call, before proceeding to SE7 to drop off the civilians. (Star Trek: The Cantabrian Expeditions: "Breaking Benjamin", "Isolation", "Two Hit, One Stone")