🌐EnglishEnglishBahasa IndonesiaEspañolFrançaisEntityQ115118050· pop 5· linked from 183 articlesHart–Tipler conjecturethe idea that an absence of detectable Von Neumann probes is contrapositive evidence that no intelligent life exists outside of the Solar SystemConnectionssearch for extra-terrestrial intelligenceEntityMars sample return missionEntityCategoriesAstrobiologyAstronomical controversiesAstronomical hypothesesFermi paradoxHypothesesSearch for extraterrestrial intelligence