In the more than 60 years in which scientists have engaged in the Search for Extraterrestrial Intelligence (SETI), several potential examples of technological activity ("technosignatures") have been ...

Astronomers decided to look for partially constructed Dyson spheres and other megastructures around stars. They determined that half-built Dyson spheres or megastructures would be easy to see with our ...

When people hear “Dyson sphere,” their first thought is probably a heavy-duty vacuum. They certainly don’t think of a megastructure surrounding and harnessing a star’s energy with the purpose of ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. (Left) an illustration of a Dyson sphere (Right) A portion of the all-sky survey from NASA’s Wide ...