extraterrestrial intelligence
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Interstellar Visitor 3I/ATLAS: Search for Technosignatures
A 2025 radio search with the Allen Telescope Array targeted 3I/ATLAS, the third confirmed interstellar object to pass through our solar system, for possible technosignatures. Although no narrowband signals were detected, the study set strong upper limits on engineered radio emissions and highlighted the scientific value of constraining what is not present.
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SETI@home’s Final 100 Signals: The Search That Refused to Die Quietly
SETI@home has narrowed 12 billion possible detections to 100 candidate signals for further study, potentially with China’s FAST radio telescope. The piece reflects on the milestone as both a scientific achievement and a case study in how a civilization might normalize or quietly contain evidence of non-human intelligence through caution, complexity, and process.