A fresh theoretical analysis has given astronomers sharper criteria for spotting hypothetical alien megastructures known as Dyson spheres. The refined signatures focus on subtle infrared excesses and unusual stellar dimming patterns hidden in existing sky-survey datasets.
Researchers plan to run the new filters against archival data from missions like Gaia and JWST. Even a null result, they note, would meaningfully tighten the constraints on how common — or rare — advanced civilizations might be in our galactic neighborhood.
