A group of Swedish, Indian, and American astronomers has indicated that "seven stars in the cosmic space may contain Dyson Spheres, suggesting the existence of extraterrestrial civilizations." In an article written by the group for the prestigious British scientific journal MNRAS, the scientists studied the radiation of stars recorded by the Gaia, 2MASS, and WISE telescopes. It was found that stellar bodies, which theoretically possess Dyson Spheres, emit an excess of infrared radiation that can be detected by instruments on Earth. It is well known that Dyson Spheres can only appear through the efforts of highly advanced extraterrestrial beings, and thus, studying the potential radiation emitted by these structures is one of the main methods for searching for the existence of other living beings in cosmic space.
The article stated: "We were able to discover seven visible M-type dwarf objects exhibiting excess emissions of unknown origin that fit our Dyson Sphere model." The article noted that current scientific theories do not explain the excess radiation detected in stars. Astronomers plan to examine these bodies with more powerful telescopes to explore the possibility of signs of life there.
The idea that advanced extraterrestrial civilizations might build astronomical structures was first proposed more than half a century ago by American theoretical physicist Freeman Dyson. This idea subsequently became known as the "Dyson Sphere." A Dyson Sphere is a hypothetical massive structure that completely encircles a star and captures a significant portion of its emitted energy. This concept is a thought experiment aimed at explaining how alien civilizations could meet their energy requirements when those needs exceed what can be generated from their planet's own resources. A very small fraction of the star's energy emissions reaches the surface of any planet orbiting it. These constructed envelopes around the star enable the alien civilization to obtain more energy.
