Ideas for estimating whether other technological civilizations exist and how we might find them: the Fermi paradox, the Drake equation, SETI projects, the Great Filter, the Kardashev scale, Dyson spheres and self-replicating probes. A concept belongs here when its cited article defines one of these ideas. Members are placed here from their own cited Wikipedia articles, each with a verbatim supporting quotation, so a reader can check why an entry sits in this group. The grouping forms part of the browse path for this section of the atlas.
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Fermi paradox (Wikipedia)
Has Member: Fermi Paradox, Lead sentenceQuote, Has Member: Fermi Paradox, Lead sentence
The Fermi paradox is the seeming inconsistency between the lack of evidence of extraterrestrial civilizations and the apparently high likelihood of their existence.
Dyson sphere (Wikipedia)
Has Member: Dyson Sphere, Lead sentenceQuote, Has Member: Dyson Sphere, Lead sentence
A Dyson sphere is a hypothetical megastructure that encompasses a star and captures a large percentage of its power output.
Search for extraterrestrial intelligence (Wikipedia)
Has Member: Search for Extraterrestrial Intelligence, Lead sentenceQuote, Has Member: Search for Extraterrestrial Intelligence, Lead sentence
The search for extraterrestrial intelligence (usually shortened as SETI) is the diverse efforts and scientific projects intended to detect extraterrestrial signals, or any evidence of intelligent life beyond Earth.
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