In the game, a special satellite code-named Regia Solis is used to provide a city with clean energy but at full capacity it is powerful enough to destroy the city or other targets. The James Bond films Diamonds are Forever and Die Another Day both feature orbital weapons that focus sunlight to destructive effect on Earth.Ī similar concept is used in the Resident Evil: Revelations video game. Instead of a vast individual mirror, hundreds of low cost reflectors could in theory be synchronized to concentrate solar irradiance and aim it at a target. With the deployment and validation of satellite mega-constellations, their use as a sun gun has also been proposed. After being questioned by officers of the United States, the Germans claimed that the sun gun could be completed within 50 or 100 years. The scientists calculated that a huge reflector, made of metallic sodium and with an area of 9 square kilometres (900 ha 3.5 sq mi), could produce enough focused heat to make an ocean boil or burn a city. This so-called "sun gun" ( Sonnengewehr) would be part of a space station 8,200 kilometres (5,100 mi) above Earth.
Later during World War II, a group of German scientists at the German Army Artillery proving grounds at Hillersleben began to expand on Oberth's idea of creating a superweapon that could utilize the sun's energy. In 1929, the German physicist Hermann Oberth developed plans for a space station from which a 100-metre-wide concave mirror could be used to reflect sunlight onto a concentrated point on the earth.
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