[Source] A resonance torpedo was a missile that was capable of causing a star to supernova by causing a chain reaction in the core. It was developed at the Galactic Empire's hidden Maw Installation and was the primary weapon of the Sun Crusher. These torpedoes, in their prototype form, were used during the Battle of the Sixela system to destroy the Rebel Alliance starfleet. Years later, rogue Jedi Knight Kyp Durron stole the Sun Crusher and used its torpedoes in a rampage against the Empire.