# Technosignatures **Domain:** Astrobiology / SETI / Detection **Doc Type:** Concept Node **Maturity:** Developing **Related:** [[SETI Institute]], [[Fermi Paradox]], [[Nonhuman Intelligence]] --- ## Definition **Technosignatures** are observable phenomena that could indicate the activity of technology beyond Earth, such as structured emissions, engineered atmospheric chemistry or large-scale energy use. ## Corpus Context The concept widens intelligence detection beyond listening for messages. Intelligence may become legible through what it builds, consumes, stabilizes or changes in its environment. ## Backlinks [[SETI Institute]] · [[Fermi Paradox]]