🌐EnglishEnglishBahasa IndonesiaEspañolFrançaisItalianoNederlandsPolskiPortuguêsTiếng ViệtРусскийالعربية한국어中文日本語EntityQ1157015· pop 21· linked from 191 articleszoo hypothesisAlso known as wilderness hypothesis, zoo theory, alien zoo, interdict scenariotheory regarding lack of alien contactWikidata factsImageExtraterrestrials observing Earth.pngSources (3)wikidata.orgfr.wikipedia.orgen.wikipedia.orgvia Wikidata · CC0Available in 21 languagesEspañolFrançais中文日本語РусскийPortuguêsItalianoالعربيةArmenianBahasa IndonesiaConnectionscradle of civilizationEntityMars sample return missionEntityCategoriesBiological hypothesesExtraterrestrial lifeFermi paradoxHypothesesSearch for extraterrestrial intelligence