Searching for Signs of Intelligent Life: Technosignatures
https://exoplanets.nasa.gov/news/1765/searching-for-signs-of-intelligent-life-technosignatures/Signs of life beyond Earth could take forms that are clearly artificial – radio or light signals, or even evidence of large-scale engineering.
I know this is pretty basic for many of you, but I'm happy to see this from NASA.
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