The Ereignishorizont was a German spacecraft that was equipped with a gravity drive. Originally constructed in the 2040's to outpace Soviet relativistic vehicles, the Ereignishorizont was sent on a maiden voyage to Alpha Centauri in 2047. However, the Ereignishorizont mysteriously never returned from Alpha Centauri. Rumors persisted among sailors and merchants that the vessel's disappearance was part of a conspiracy in spite of professional historians, State Security and the Coalition Navy dismissing these stories as nothing more than tall tales.
- Ereignishorizont is the German words for "event horizon". The ship and its disappearance is based on the 1997 science fiction horror film, Event Horizon.