Back Extraterrestrische Intelligenz German هوش فرازمینی Persian Intleacht eachtardhomhanda Irish 宇宙人 Japanese 외계인 Korean Харь гаригийн оюун ухаан Mongolian Inteligență extraterestră Romanian Внеземной разум Russian வேற்றுலக நுண்ணறிவு உயிரினம் Tamil Dünya dışı zekâ Turkish
Extraterrestrial intelligence (ETI) refers to hypothetical intelligent extraterrestrial life. No such life has ever been observed to exist.[1] The question of whether other inhabited worlds might exist has been debated since ancient times.[2] The modern form of the concept emerged when the Copernican Revolution demonstrated that the Earth was a planet revolving around the Sun, and other planets were, conversely, other worlds.[3] The question of whether other inhabited planets or moons exist was a natural consequence of this new understanding. It has become one of the most speculative questions in science and is a central theme of science fiction and popular culture.[4]
- ^ Bennett, Jeffrey (2017). Life in the universe. United States: Pearson. p. 3-4. ISBN 978-0-13-408908-9.
- ^ Plurality of Worlds: The Extraterrestrial life Debate from Democritus to Kant, by Steven Dick, Cambridge University Press 1984
- ^ The Extraterrestrial Life Debate: 1750-1900, by Michael J. Crowe, Dover Publications, 2011
- ^ Are we alone? Peter Spinks. May 21, 2013.