The Jedi prison called the Sason Temple existed on the remote gas giant of Sason. Only individuals with a pure heart and a strong connection to the Force could unlock the temple's entrance. In 19 BBY, Jedi Masters Shaak Ti and Aayla Secura imprisoned a Starweird within the Sason Temple; this creature was a dangerous entity that vibrated with the Force. Sometime between 3 ABY and 4 ABY, the renegade archaeologist Doctor Chelli Lona Aphra and Jedi-in-training Luke Skywalker traveled to the temple, where they inadvertently freed the Starweird. Aphra and Skywalker both survived their confrontation with the Starweird and ultimately vanquished it.