In 2 BBY, the Rebel Alliance was formed with the signing of the Corellian Treaty, with the Galactic Empire unwittingly being responsible for ensuring its existence.
After a rescue attempt was made on the Rebel leaders by Galen Marek, with the latter sacrificing himself in the process, the Death Star ended up damaged from Marek's actions, and thus was relocated to Geonosis to continue its construction, especially due to the Rebel's knowledge of the station. As such, it was also placed under heavy guard by the Imperials.
Imperial forces engage the attacking Rebel forces during the skirmish
At least one year later, a Star Tours-owned StarSpeeder 1000, having earlier escaped from an Imperial raid on Spaceport THX1138, hyperspaced into the Geonosis system to rendezvous with the Rebel fleet and safely deliver a Rebel agent into their custody, whom also acted as the reason for the Imperial raid in the first place. However, the craft ended up ambushed by the bounty hunter Boba Fett in the Firespray-31-class patrol and attack craft Slave I, with the bounty hunter having been hired by Vader to track and retrieve the StarSpeeder after the latter's escape from the aforementioned raid. After evading the bounty hunter, the StarSpeeder inadvertently traveled in close proximity to the Death Star construction area, resulting in several Imperial starfighters that were led by Darth Vader attacking the craft. Narrowly evading the Imperial pursuers, the spacecraft eventually made its way through the interior of the incomplete battle station, eventually ending up inside one of its hangars and speeding out of the hangar. However, Fett ambushed them yet again just after their escape, and then fired a seismic charge at the StarSpeeder. However, it was deflected back by the StarSpeeder's weapons systems, sending the Slave I out of control from the blast, and the transport then used the opportunity to escape into hyperspace.
Afterwards, the StarSpeeder successfully rendezvoused with the Rebel Fleet, and landed aboard Home One, delivering the agent.
The mission is based on a scenario from the ride Star Tours: The Adventures Continue, which featured the use of the StarSpeeder 1000 ST-1401 . Because of the nature of the ride, the skirmish at Geonosis is shown randomly, although it is always the last portion of the ride. In large part because of the random nature of the ride, the StarSpeeder 1000's flight number is not given in this article. Similarly, Darth Vader encountering the StarSpeeder 1000 before during the raid is also not covered, for the same reasons.
The StarWars.com article "Convenient Daily Departures" revealed that Vader had hired Boba Fett to locate and capture Star Tours Flight 1401, although it does not confirm whether Boba Fett had ever directly encountered the vessel.