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The zoo hypothesis speculates on the assumed behavior and existence of technologically advanced extraterrestrial life and the ... Arthur C. Clarke's The Sentinel ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 27 January 2025. Problem of the lack of evidence for alien life despite its apparent likelihood This article is about the absence of clear evidence of extraterrestrial life. For a type of estimation problem, see Fermi problem. Enrico Fermi (Los Alamos 1945) The Fermi paradox is the discrepancy between ...
In astrobiology, uniformity of motive is an essential assumption of the zoo hypothesis explanation to Fermi's paradox.The zoo hypothesis states that alien civilizations refrain from contacting Earth, so as to not interfere in natural evolution and cultural development, or to minimize risk for themselves. [1]
Arthur C. Clarke; Giuseppe Cocconi; Communication with extraterrestrial intelligence; Contact (novel) Cosmic Call; ... Zoo hypothesis This page was last ...
In Arthur C. Clarke's Space Odyssey series, Monoliths are machines in black cuboids whose sides extend in the precise ratio of 1 : 4 : 9 (1 2 : 2 2 : 3 2) built by an unseen extraterrestrial species whom Clarke dubbed the Firstborn and who he suggests are the earliest highly intelligent species to evolve in the Milky Way.
According to the Great Filter hypothesis, at least one of these steps—if the list were complete—must be improbable. If it is not an early step (i.e., in the past), then the implication is that the improbable step lies in the future and humanity's prospects of reaching step 9 (interstellar colonization) are still bleak.
Childhood's End is a 1953 science fiction novel by the British author Arthur C. Clarke.The story follows the peaceful alien invasion [1] of Earth by the mysterious Overlords, whose arrival begins decades of apparent utopia under indirect alien rule, at the cost of human identity and culture.
In 1986, Clarke provided a grant to fund the prize money (initially £1,000) for the Arthur C. Clarke Award for the best science fiction novel published in the United Kingdom in the previous year. In 2001 the prize was increased to £2001, and its value now matches the year (e.g., £2005 in 2005).