The broadly accredited clarification is that what was once to change into the Galactic Empire would take about 20 years to construct one thing as large and complicated because the Death Star. No small enterprise.
As a 2016 article at Inverse explains, that is supported via the occasions of the prequels of the past due Nineteen Nineties and early aughts. In brief, Depend Dooku (Christopher Lee) is proven to be in ownership of the holographic schematics for the Death Star in “Assault of the Clones,” and via the top of “Revenge of the Sith” a couple of years later, the send’s body is proven to be in building. 19 years later, in “Rogue One,” Jyn Erso (Felicity Jones) and her band of rebels scouse borrow the plans for the finished Death Star.
The article additionally rehashes a little bit of the back-and-forth between fanatics relating to whether or not the mathematics holds up. In the long run, it kind of feels that it does. That is in particular prescient taking into account the mind-blowing post-credits scene on the finish of the Season 1 finale of “Andor.” That is once we are proven that the items Cassian (Diego Luna) and his fellow prisoners have been construction right through his couple of minutes on Narkina 5 are meant for a just about finished however nonetheless some distance from operational Death Star. As soon as once more, for the reason that “Andor” is showed to happen 5 years prior to “Rogue One,” the mathematics works.