In 1960, Freeman Dyson proposed a brand-new theory of artificial celestial bodies: satellites orbiting the Sun would form nodes, using energy-absorption devices to completely enclose a star and obtain most or all of its energy output.
Put simply, it was a natural fusion reactor powered by a star, taking all the stellar energy from an entire star system without leaving behind a single trace.
Dyson believed that planets like Earth contained very limited energy reserves, far from enough to support the civilizations upon them into advanced stages of development.
Moreover, in a star-planet system, most of the radiation energy emitted by the star was wasted. At present, the planets of our solar system received only about one-billionth of the Sun's radiated energy.
A highly developed civilization would inevitably be capable of surrounding the Sun with an enormous spherical structure, intercepting most of its radiant energy. Only then could it sustain that civilization over the long term and allow it to develop to sufficient heights.
Dyson believed such a structure was the logical inevitability for civilizations that existed long-term in the universe while their energy demands continually rose. He also suggested searching for such artificial celestial structures in order to find extraterrestrial supercivilizations.
According to Kardashev's three-tier civilization classification theory, a civilization that had mastered Dyson Sphere technology—one capable of collecting the energy of an entire star system—had reached Level Two civilization.
Shen Feng understood what a Dyson Sphere was, but what the hell was this Reverse Dyson Sphere that wrapped up its own planet?
While it could absorb all stellar radiation directed at the planet and greatly improve energy efficiency, it would also cause extremely serious issues such as environmental deterioration.
More importantly, if they possessed such technology, they might as well have built solar power stations in space and