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This is an accepted version of this page This is the latest accepted revision, reviewed on 8 February 2025. Discrepancy 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 ...
Science fiction has communicated scientific ideas, imagined a range of possibilities, and influenced public interest in and perspectives on extraterrestrial life. One shared space is the debate over the wisdom of attempting communication with extraterrestrial intelligence.
The Great Filter is the idea that, in the development of life from the earliest stages of abiogenesis to reaching the highest levels of development on the Kardashev scale, there is a barrier to development that makes detectable extraterrestrial life exceedingly rare. [1] [2] The Great Filter is one possible resolution of the Fermi paradox. The ...
The impact of discovering life beyond earth. Cambridge University Press. ISBN 978-1-107-10998-8. Ashkenazi, Michael (2016). What We Know About Extraterrestrial Intelligence. Springer. ISBN 978-3-319-44455-0. Vakoch, Douglas (2013). Astrobiology, History, and Society — Life Beyond Earth and the Impact of Discovery. Springer. ISBN 978-3-642 ...
The report is sometimes mentioned in discussions about possible government cover-ups of evidence of extraterrestrial life, such as discussions under blog entries of skeptic astronomer Phil Plait. [13] Sometimes these mentions point out the existence of the report, sometimes they argue that the report is evidence of extraterrestrial life.
A culture of extraterrestriality is the cultural imagination and description of otherworldlyness, alienness or outright outer space, characterizing the other through extraterrestrial space, [1] [2] beyond mere extraterritoriality or periphery, being the space that is imagined or described as extraterrestrial, or simply any space outside a described land.
No extraterrestrial life has ever been discovered. But if extraterrestrial life exists, it may be vulnerable to interplanetary contamination by foreign microorganisms. Some extremophiles may be able to survive space travel to another planet, and foreign life could possibly be introduced by spacecraft from Earth. If possible, some believe this ...
The Berserker hypothesis, also known as the deadly probes scenario, is the idea that humans have not yet detected intelligent alien life in the universe because it has been systematically destroyed by a series of lethal Von Neumann probes. [1] [2] The hypothesis is named after the Berserker series of novels (1963–2005) written by Fred ...