Science
Related: About this forum'Dyson spheres' were theorized as a way to detect alien life. Scientists say they've found potential evidence.
Published at 4:39 pm, June 17, 2024
Jacopo Prisco, CNN
Freeman Dyson theorized that hypothetical alien megastructures would give off infrared radiation and searching for that byproduct would be a viable method for searching for extraterrestrial life. | 3D illustration, Getty Images/NASA via CNN Newsource
(CNN) What would be the ultimate solution to the energy problems of an advanced civilization? Renowned British American physicist Freeman Dyson theorized it would be a shell made up of mirrors or solar panels that completely surrounds a star harnessing all the energy it produces.
One should expect that, within a few thousand years of its entering the stage of industrial development, any intelligent species should be found occupying an artificial biosphere which completely surrounds its parent star, wrote Dyson in a 1960 paper in which he first explained the concept.
If it sounds like science fiction, thats because it is: Dyson took the idea from Olaf Stapledons 1937 novel Star Maker, and he was always open about that. The late scientist was a professor emeritus at the Institute of Advanced Study in Princeton, New Jersey.
Still, coming from a thinker who some in the scientific community say might have been worthy of a Nobel Prize early in his career, the concept took hold and the hypothetical megastructures became known as Dyson spheres, even though the physicist later clarified that they would actually consist of a loose collection or swarm of objects traveling on independent orbits around the star.
In his paper, Dyson also noted that Dyson spheres would give off waste heat detectable as infrared radiation, and suggested that looking for that byproduct would be a viable method for searching for extraterrestrial life. However, he added that infrared radiation by itself would not necessarily mean extraterrestrial intelligence, and that one of the strongest reasons for searching for such sources was that new types of natural astronomical objects might be discovered.
More:
https://www.eastidahonews.com/2024/06/dyson-spheres-were-theorized-as-a-way-to-detect-alien-life-scientists-say-theyve-found-potential-evidence
GreenWave
(8,990 posts)And what if that star attracts space rocks, comets et alia?
Our dinky dwarf Sun has trillions of of objects in orbit around it that could, on occasion, be dislodged,
SWBTATTReg
(24,011 posts)that more than likely, they've already harvested all of the loose floating materials in their star system for the raw materials, thus, there won't be any loose floating materials to slam into alien made structures. And to boot, where would they get all of the raw materials to build such a sphere? The floating raw materials would be used I'd imagine.