How to find alien technology

How to find alien technology

You might think this column is about UFOs and the Pentagon's recent declassified files. It's not. We're talking about technosignatures, the evidence of alien technology: a radio or laser signal, artificial chemicals in a distant planet's atmosphere, or a Dyson sphere, a giant structure built around a star to capture its energy. People mix the two up constantly, and astronomer Dr. Jason Wright sets the record straight. "The two fields have been r…