Death Star
Although details, such as the superlaser's location, shifted between different concept models during production of "Star Wars", the notion of the Death Star being a large, spherical space station over 100 kilometers in diameter was consistent in all of them. George Lucas gave the original task of designing a "Death Star" to concept artist and spaceship modeler Colin Cantwell, who had collaborated with Stanley Kubrick on the 1968 film "". In a 2016 interview, Cantwell related that "I didn't originally plan for the Death Star to have a trench, but when I was working with the mold, I noticed the two halves had shrunk at the point where they met across the middle." As it "would have taken a week of work just to fill and sand and refill this depression," Cantwell suggested a trench to Lucas to save the labor. Lucas liked the idea, and the Death Star model was created by John Stears. The buzzing sound counting down to the Death Star firing its superlaser comes from the "Flash Gordon" serials. Portraying an incomplete yet powerful space station posed a problem for Industrial Light & Magic's modelmakers for "Return of the Jedi". Only the front side of the 137-centimeter model was completed, and the image was flipped horizontally for the final film. Both Death Stars were depicted by a combination of complete and sectional models and matte paintings.
Schwerer Gustav
Schwerer Gustav (English: "Heavy Gustaf") was a German 80 cm (31.5 in.) railway gun. It was developed in the late 1930s by Krupp in Darłowo (then Rügenwalde) as siege artillery for the explicit purpose of destroying the main forts of the French Maginot Line, the strongest fortifications in existence at the time. The fully assembled gun weighed nearly 1,350 tonnes, and could fire shells weighing seven tonnes to a range of . The gun was designed in preparation for the Battle of France, but was not ready for action when the battle began, and in any case the Wehrmacht's Blitzkrieg offensive through Belgium rapidly outflanked and isolated the Maginot Line's static defenses, eventually forcing the French to surrender and making their destruction unnecessary. Gustav was later deployed in the Soviet Union during the Battle of Sevastopol, part of Operation Barbarossa, where, among other things, it destroyed a munitions depot located roughly 30 meters below ground level. The gun was moved to Leningrad, and may have been intended to be used in the Warsaw Uprising like other German heavy siege pieces, but the rebellion was crushed before it could be prepared to fire. Gustav was destroyed by the Germans near the end of the war in 1945 to avoid capture by the Red Army.