Despite the fact the ship's Shaw-Fujikawa Translight Engine was damaging during the landing, Captain Arthur Dallas, First Officer Thomas Kane, and navigator Joan Lambert formed a trio to explore Acheron's surface, eventually discovering the derelict and the signal coming from it. The Nostromo landed on Acheron on June 16th, 2528 after acquiring the signal from the derelict at Acheron, as per Weyland-Yutani protocol. The agency then sent Ash, a synthetic operative, to replace and pose as a member of the Weyland-Yutani Corporation's ship Nostromo, and land on the moon to acquire a xenomorph. As humanity was facing slaughter at the hands of the alien hegemony Covenant during the First Contact War, ONI sought to use the alien creature as a weapon of war in order to ensure the survival of the human race. When ONI discovered the moon, they also detected a mysterious transmission hailing from the derelict vessel, where they found out about the xenomorph species. The initial comprehensive survey would only be carried on 2531. The pilot died, apparently impregnated by a Facehugger, but not before sending a warning message for any sapient explorator to not approach the ship.Īcheron was first discovered by humanity on May 14th, 2528, when the Office of Naval Intelligence observed and cataloged it by a deep-space probe on Onyx. During the Forerunner-Xenomorph War, Acheron was observed to be one of the sites where the xenomorphs employed their swarm tactics against the forerunners.Īfter an unknown amount of time following the activation of the Halo Array, a ship belonging to a member of an unknown species crash-landed on Acheron, holding multiple xenomorph Ovomorphs for unknown reasons. 100,000 years in the past, Acheron was home to forerunner presence of unknown size.