Technosignatures in Focus: Radio Searches, Megastructures, and the Roadmap to Alien Detection
To the point
From Drake's early ideas to NASA's current technosignature programs, the search for intelligent life now uses a range of clues—radio and optical signals, megastructures, and atmospheric signs—driven by exoplanet discoveries and space missions, with Jill Tarter, Wright, and Gelino urging patient, data‑driven work even though no conclusive evidence has been found.