Martin Archer, a plasma physicist at Queen Mary University of London, described how the famous spaceship from the Star Wars saga could function.
In the film, the Death Star was 120 kilometers in diameter, was made of Quadaneic steel and was inhabited by 2 million people. Is this possible in real life? Apart from the fact that there is no Quadanium steel, the earth's industry would never have been able to produce enough steel to make such a whopper: it will take time 182 times the age of the universe.
Scientist Martin Archer believes that even if questions of production and design were discarded, humanity could never have been able to control the Death Star. Take, for example, the power supply: for the ISS to function, approximately 0.75 watts of energy is needed for each cubic meter of internal space. It is impossible to meet such norms for the Death Star when using solar panels, and a nuclear reactor of the required size is too unstable.
Also, the question of providing gravity arises. To achieve within the Death Star a force of gravity, even slightly approaching the Earth's, there must be another star in its center, this time a real one. Perhaps George Lucas himself, the director of Star Wars, meant something like this, but it is impossible to put it into practice. In order to effectively accumulate the energy of a star, it is necessary to build a so-called Dyson sphere around it - and for this structure to be stable, its diameter must be much more than 120 kilometers.
So, apparently, Lucas's fantasy will remain a fantasy. Probably, it is for the best - we still lacked a real citadel of evil in orbit!