However, Dyson was not the first to advance this idea.
Dyson did not detail how such a system could be constructed, but argued that as the structure would result in the large-scale conversion of starlight into far-infrared radiation, an earth-based search for sources of infrared radiation could identify stars supporting intelligent life. He speculated that this could be done via a system of structures (which he referred to as a shell) orbiting the star, designed to intercept and collect its energy. Dyson theorized that as the energy requirements of an advanced technological civilization increased, there would come a time when it would need to systematically harvest the energy from its local star on a large scale. The physicist and mathematician Freeman Dyson is credited with being the first to formalize the concept of what became known as the Dyson sphere in his 1960 Science paper "Search for Artificial Stellar Sources of Infra-Red Radiation". In May 2013, at the Starship Century Symposium in San Diego, Dyson reiterated his regret that the concept had been named after him. Fictional depictions often describe a solid shell of matter enclosing a star – an arrangement considered by Dyson himself to be implausible. These proposals have not been limited to solar-power stations, with many involving habitation or industrial elements.
#Disk doctor belt series
Since Dyson's 1960 paper, many variant designs involving building an artificial structure or series of structures to encompass a star have been proposed in exploratory engineering or described in science fiction, often under the name "Dyson sphere". Spheres detected in astronomical searches could be an indicator of extraterrestrial life, with different types of sphere and their energy-harvesting ability corresponding to levels of technological advancement on the Kardashev scale. Dyson speculated that such structures would be the logical consequence of the escalating energy needs of a technological civilization and would be a necessity for its long-term survival. The concept was later explored by the physicist Freeman Dyson in his 1960 paper "Search for Artificial Stellar Sources of Infrared Radiation".
surrounded by a gauze of light-traps, which focused the escaping solar energy for intelligent use". The first modern imagining of such a structure was by Olaf Stapledon in his science fiction novel Star Maker (1937), in which he described "every solar system. Because only a tiny fraction of a star's energy emissions reaches the surface of any orbiting planet, building structures encircling a star would enable a civilization to harvest far more energy. The concept is a thought experiment that attempts to imagine how a spacefaring civilization would meet its energy requirements once those requirements exceed what can be generated from the home planet's resources alone. 3D rendering of a Dyson sphere utilizing large, orbiting panelsĪ Dyson sphere is a hypothetical megastructure that encompasses a star and captures a large percentage of its solar power output.
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