Is the apparent absence of extraterrestrial technological civilizations down to the zoo hypothesis or nothing?
Ian Crawford, Dirk Schulze‐Makuch
Topics & Concepts
NothingExtraterrestrial lifeHumanitySearch for extraterrestrial intelligenceEpistemologyAstrobiologyGalaxyPerspective (graphical)PhilosophyAstronomyPhysicsComputer scienceTheologyArtificial intelligenceSpace Science and Extraterrestrial LifeEarth Systems and Cosmic EvolutionNeuroethics, Human Enhancement, Biomedical Innovations