Aeten II
this highly-volcanic, tectonically-active planet was the only known source of stygium crystals. By the early years of the New Order, much of Aeten II's sources of stygium had run dry. The planet was destroyed during the height of the New Order when Grand Admiral Martio batch, searching for a source of stygian crystals with which to produce a fool-proof cloaking device for the Empire, blasted the planet into fragments with the superlaser installed on the Tarkin.