Death Star
The first Death Star is depicted in various sources of having a crew of 265,675, as well as 52,276 gunners, 607,360 troops, 30,984 stormtroopers, 42,782 ship support staff, and 180,216 pilots and support crew. Its hangars contain assault shuttles, blastboats, Strike cruisers, land vehicles, support ships, and 7,293 TIE fighters. It is also protected by 10,000 turbolaser batteries, 2,600 ion cannons, and at least 768 tractor beam projectors. Various sources state the first Death Star has a diameter of between 140 and 160 kilometers. There is a broader range of figures for the second Death Star's diameter, ranging from 160 to 900 kilometers.
Doomsday device
Doomsday devices started becoming more common in science fiction in the 1940s and 1950s, due to the invention of nuclear weapons and the constant fear of total destruction. A well-known example is in the film "Dr. Strangelove" (1964), where the Dead Hand is triggered by an incompletely aborted American attack, and all life on Earth is extinguished. Another is in the TV episode "" (1967), where the crew of the "Enterprise" fights a powerful planet-killing alien machine. However, doomsday devices also expanded to encompass many other types of fictional technology, one of the most famous of which is the Death Star, a moon-sized planet-destroying space station.