EntityQ115118053· pop 5· linked from 182 articlesfirstborn hypothesisSign in to saveidea that humanity is the first intelligent lifeConnectionssearch for extra-terrestrial intelligenceEntityMars sample return missionEntityBreakthrough InitiativesEntityEarthConceptuniverseEntitybiochemistryEntityCarl SaganEntitymicrobiologyEntitypaleontologyEntityintelligenceEntityastrophysicsEntityastrobiologyEntityextraterrestrial lifeEntityplanetary scienceEntityRosettaEntityFermi paradoxEntitybiomoleculeEntityabiogenesisEntityPhoenixEntityApollo 17ConceptCategoriesExtraterrestrial lifeFermi paradoxSearch for extraterrestrial intelligence