Quote Originally Posted by Khedrac View Post
This is beyond Star Wars technology - if you think that the Death Star - a moon-sized planetoid was regarded as impossible, but was just buildable by the empire (and no one else) then planetary-sized building projects are beyond their technology.
In the Legends continuity, ancient alien technology consistently outranks the capabilities of the Human Republic (and later Imperial) populace. The Iokath species built a Dyson Sphere called Iokath thousands of years before the films, establishing that massive megastructures are indeed possible in Star Wars.