megastructures Archive

Alien "megastructure" mystery deepens, but probably isn't a Dyson sphere

KIC 8462862, a distant star, flickers erratically. Among the possibilities: occlusion by an alien “megastructure” surrounding it in space. Though it sounds far-fetched, and there’s no other evidence of intelligence emanating from the system, the flickering’s gotten weirder. The star’s total output has diminished continuously over the course of four years. Jason Wright, the Penn State astronomer who first suggested that Tabby’s …