The Battle of Science Station Youst was one of the preliminary battles of the Sepan Civil War, in which Ripoblus forces launched an attack on the Dimok Science Station Youst. Imperial forces intervened, resulting in the Ripoblus forces being driven off, and illegal Dimok weapons being discovered.
Ripoblus forces staged a raid on the Dimok Science Station Youst as a retaliatory strike in response to a recent Dimok raid on one of their weapons convoys. Near the station were a series of containers, which the Ripoblus planned to steal for their own benefit. Using a mix of Modified Corvettes and Assault Transports, they quickly penetrated the station's modest starfighter defense, and began firing on the station itself.
Just as the Dimok defenses fell, the Victory-class Star Destroyer Protector entered the area, and launched 3 TIE Fighters and 3 TIE Bombers. Maarek Stele, piloting one of the bombers, was initially tasked with making an example to the Ripoblus by destroying one of the Corvettes. However, the Modified Frigate Dromon entered, just above the Protector, and began firing on it. Stele and his wingmates quickly retreated to defend the Protector. While the Destroyer's shields were considerably depleted, its turbolasers and bombers overwhelmed and destroyed the Dromon. Getting a reload from a Utility Tug, Stele and the rest of his bombers then targeted the assault force, destroying a Corvette and several Assault Transports, and the mounting losses compelled the Ripoblus to call off the attack and retreat.
Acting on orders from the Prophets of the Dark Side, Stele scanned the Dimok containers and found illegal weaponry. Protector then deployed two DX-9 stormtrooper transports to capture to confiscate these weapons and place Science Station Youst under their supervision. The capture was not difficult as the platform's shields were severely weakened by the earlier Ripoblus assault. Several Dimok Delta-class JV-7 escort shuttles exited hyperspace to try to stop the Imperials from capturing the science station, but it was too late and they were destroyed by the Protector's TIEs.
- Star Wars: TIE Fighter (First appearance)