technosignature
Sign in to saveAlso known as technomarker, techno-signature
thumb|400px|Illustration of various types of technosignatures Technosignature or technomarker is any measurable property or effect that provides scientific evidence of past or present technology. Technosignatures are analogous to biosignatures, which signal the presence of life, whether intelligent or not. Some authors prefer to exclude radio transmissions from the definition, but such restrictive usage is not widespread. Jill Tarter has proposed that the search for extraterrestrial intelligence (SETI) be renamed "the search for technosignatures". Various types of technosignatures, such as rad
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~16 min read
Article
17 sectionsContents
- Astroengineering projects
- Orbital paths, transit signatures, stellar activity and star-system composition
- Communication networks
- Planetary analysis
- Artificial heat and light
- Atmospheric analysis
- Extraterrestrial artifacts and spacecraft
- Spacecraft
- Satellites
- On exoplanets
- Scientific projects searching for technosignatures
- Vanishing stars
- Organization of novel projects
- Implications of detection
- See also
- Further reading
- References
thumb|400px|Illustration of various types of technosignatures Technosignature or technomarker is any measurable property or effect that provides scientific evidence of past or present technology. Technosignatures are analogous to biosignatures, which signal the presence of life, whether intelligent or not. Some authors prefer to exclude radio transmissions from the definition, but such restrictive usage is not widespread. Jill Tarter has proposed that the search for extraterrestrial intelligence (SETI) be renamed "the search for technosignatures". Various types of technosignatures, such as radiation leakage from megascale astroengineering installations such as Dyson spheres, the light from an extraterrestrial ecumenopolis, or Shkadov thrusters with the power to alter the orbits of stars around the Galactic Center, may be detectable with hypertelescopes. Some examples of technosignatures are described in Paul Davies's 2010 book The Eerie Silence, although the terms "technosignature" and "technomarker" do not appear in the book.
In February 2023, astronomers reported, after scanning 820 stars, the detection of 8 possible technosignatures for follow-up studies.