Answer: A hypothetical engineering project to harness a star's energy
Notes: An international team from Sweden, India, the US, and the UK has developed a method to search for Dyson spheres—hypothetical megastructures that advanced civilizations could build to harness a star's energy. Proposed by Freeman J. Dyson in 1960, these structures would emit infrared radiation, serving as technosignatures. Despite scanning infrared maps, no evidence of Dyson spheres has been found yet.
