MOSCOW, May 19. Seven stars may have Dyson spheres that indicate the existence of extraterrestrial civilizations, a team of Swedish, Indian and American astronomers reported in an article for the journal Monthly Notices of the Royal Astronomical Society.
Scientists studied the radiation of stars, which is recorded by the Gaia, 2MASS and WISE telescopes. Those stellar objects that hypothetically possess Dyson spheres emit excess infrared radiation that is accessible to instruments on Earth. Due to the fact that Dyson spheres can only appear through the efforts of highly developed aliens, studying possible radiation from these devices is one of the main ways to search for alien life.
«We were able to detect seven visible M-dwarfs, demonstrating excess radiation of an unknown nature and fitting our Dyson sphere model,” the article says.
As the authors noted, existing theories in science do not explain the excess radiation detected in stars. Astronomers are planning explore these objects with more powerful telescopes in order to clarify the presence of a hypothetical sign of alien life.
The idea of the possibility of highly developed extraterrestrial civilizations building astro-engineering structures was first expressed more than half a century ago by the American theoretical physicist Freeman Dyson. He suggested that in order to obtain all the energy of their star. civilizations can enclose it in a sphere. This idea is called the “Dyson Sphere”.
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