Star Wars' newest superweapon would have made the Empire unbeatable – but, thankfully, Palpatine focused on the Death Star instead. The Sith have always been obsessed with superweapons. In ancient times, the Sith created superweapons of unimaginable power, and the most dangerous were powered by kyber crystals – the crystals typically associated with lightsabers. Emperor Palpatine wasted no time following suit; the Star Wars movies and TV shows have confirmed work on the Death Star began before the Empire had even been founded.

https://screenrant.com/star-wars-gravity-superweapon-empire-unbeatable/