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 ...

Researchers found seven stars in our galaxy that might host alien megastructures called Dyson spheres. But these stars' strange behavior could also be explained by other phenomena, like clouds of dust ...