"SETI Study on Twin Earths"
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Extraterrestrial IntelligenceGizmodo
•Science
Science
If Aliens Spot Us First, What Signs of Intelligence Will They See?

83% Informative
Researchers analyzed how a “twin Earth ” might detect evidence of humanity on our planet.
Radio signals, artificial light, and nitrogen dioxide emissions are Earthâs most detectable up to 12,000 light-years away.
The closer an alien civilization is to Earth , the more technosignatures it would detect, such as radio signals.
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