Passive Signatures of Alien Megastructures: Occulter, Glinter, and Diffuser in the Solar System

To the point

Brian Lacki proposes that pulverised remnants of extinct alien megastructures could be scattered through the solar system as passive, power-free clues—dust and relics such as occulters that block light, glinters that act as giant lenses, and diffusers that scatter light—that may lie on the Moon or travel with the solar wind, providing evidence of advanced civilizations without requiring any active signals.