ConceptsTechnosignature
Concept · astronomy · in 4 mysteries
Technosignature
Any observable sign of technology beyond Earth.
1I/'OumuamuaA signal, structure or chemical that would not occur without technology: a narrowband radio signal, a star dimmed by something built, an atmosphere with industrial gases. The Wow! signal is the best-known candidate; every candidate on this site is judged against the natural accounts first, because a technosignature is what is left when those fail.
Where it comes up
Wow! signal
The Ohio State University Radio Observatory was built by John Kraus between 1956 and 1963 and used for the Ohio Sky Survey until 1971; from 1973 it was given over to SETI, a programme led by Robert Dixon that ran until…
HD 139139, the "Random Transiter"
Two short notes have proposed other scenarios , and a radio search for technosignatures has been made ; these are the published follow-ups.
Tabby's star (KIC 8462852)
Radio and optical searches for technosignatures found nothing: no narrowband radio signal above 180 to 300 Jy in a 1 Hz channel between 1 and 10 GHz and no optical laser pulses .
Cite it
Mysteries Department. (2026). Technosignature [Concept CPT0DECW03KAJAY]. https://mysteriesdept.com/r/CPT0DECW03KAJAY
@misc{mysteriesdept_cpt0decw03kajay,
title = {Technosignature},
author = {{Mysteries Department}},
year = {2026},
note = {Concept, catalog key CPT0DECW03KAJAY},
url = {https://mysteriesdept.com/r/CPT0DECW03KAJAY}
}