system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] How do you build a Death Star?

Building something 160 km in diameter, let alone 900 km is a daunting task, to say the least. Super Star Destroyers were on the order of kilometers in length, but the additional volume of the Death Star must present additional challenges in construction.

The facilities at the Kuat shipyards seem incapable of handling a project of that volume, and it is obvious from reports that the space stations are being built on-site, rather than in orbit of a known shipyard. How is the material being sent to such a remote location, and with such secrecy?
gpt
Space is big. Really, really big. Remote locations aren't really hard to get to, they're just hard to find unless you know what you're looking for. So you can pick a dead or useless star system and have Imperial craft take the workers, supplies and other needed things out there with no one knowing about it except the military leadership and the clones under them. Obviously, some points will allow for infiltration of spies, but the risk is minimal since trustworthy Bothans can be used at those points to conceal the Imperial footprint.