The Star Core, despite its compact size, capable of fitting within a backpack, possessed immense power, sufficient to energize a planet or even a brand-new Death Star.
The Galactic Empire initiated its investigation into this technology within the city of Restuss, situated on Rori. As it was being developed, the Rebellion caught wind of this artifact and started gathering troops just outside the city limits. The Empire swiftly abandoned Restuss and braced itself for combat. Given the Star Core's substantial significance to the Empire, Emperor Palpatine had made provisions for supplementary, highly skilled units to warp to Rori through hyperspace if the situation demanded it. At the peak of the Battle of Restuss, a catastrophic malfunction occurred with the Star Core. Due to its unstable nature during development, it detonated, obliterating the once-magnificent city of Restuss.