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Search for extraterrestrial intelligence
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The search for extraterrestrial intelligence (SETI) is a collective term for scientific searches for intelligent extraterrestrial life. Methods include monitoring electromagnetic radiation for signs of transmissions from civilizations on other planets,[1][2][3] optical observation, and the search for physical artifacts. Attempts to message extraterrestrial intelligences have also been made.
Scientific investigation began shortly after the advent of radio in the early 1900s, and focused international efforts have been ongoing since the 1980s.[4] In 2015, Stephen Hawking and Israeli billionaire Yuri Milner announced the Breakthrough Listen Project, a $100 million 10-year attempt to detect signals from nearby stars.[5]
SETI has been criticized for being overly hopeful, as there is a lack of evidence for the existence of life (especially intelligent life) beyond Earth as of 2024[update].[1] It has also been claimed to be unfalsifiable, as well as being close to ufology.[4]
- ^ a b Schenkel, Peter (May–June 2006). "SETI Requires a Skeptical Reappraisal". Skeptical Inquirer. Vol. 30, no. 3. Archived from the original on 2009-11-05. Retrieved June 28, 2009.
- ^ Moldwin, Mark (November 2004). "Why SETI is science and UFOlogy is not" (PDF). Skeptical Inquirer. Archived (PDF) from the original on 2022-06-21. Retrieved 2022-06-11.
- ^ Johnson, Steven (28 June 2017). "Greetings, E.T. (Please Don't Murder Us.)". New York Times. Archived from the original on 19 July 2018. Retrieved 28 June 2017.
- ^ a b Cite error: The named reference
SETI at 50was invoked but never defined (see the help page). - ^ Katz, Gregory (July 20, 2015). "Searching for ET: Hawking to look for extraterrestrial intelligence". AP News. Archived from the original on July 22, 2015. Retrieved July 20, 2015.
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