A search strategy

Technosignatures are proposed observable traces of technology. Radio emissions are one target; researchers also consider atmospheric industrial chemicals and unusual energy use.

Source: NASA Science

A detection needs context

An unusual signal must be checked against interference, instrumental effects and natural sources. Repeat observations and independent instruments can make an interpretation more testable.

What a non-detection means

Searches cover limited places, times and signal types. Their constraints apply to the searches performed; they do not establish that intelligence is absent everywhere.

Sources

Record history

  • Version 1 · Oct 2, 2026 — Initial source-led edition