Knowledge domain 05

Signals & hypotheses

Investigate unusual signals, technosignatures and scientific hypotheses with their physical constraints, competing explanations and evidence.

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4 entries

A candidate radio signal observed toward Proxima Centauri was traced to locally generated interference through detailed follow-up.

A research effort looking for evidence of technologically capable life through testable observations.

The scientific search for observable indications of technology beyond Earth, from radio emissions to proposed atmospheric or large-scale effects.

A striking narrowband radio observation recorded in 1977. Its origin remains unresolved in the cited SETI Institute account.