Shostak, Seth SETI Institute, Mountain View, California.
Last reviewed:January 2019
Show previous versions
- Scientific rationale
- Search schemes
- Drake equation
- Fermi paradox
- Consequences of discovery
- Related Primary Literature
- Additional Reading
Postulated entities beyond Earth with a level of intelligence and comprehension at least equal to that of present-day humans. Whether alien life—and especially intelligent alien life—exists is one of the profoundest mysteries in science. Extraterrestrial intelligence is usually envisioned as an advanced civilization, populated by creatures that evolved via Darwinian evolution on a planet vaguely similar to Earth. However, extraterrestrial intelligence could conceivably be artificial in nature, having been initially created by biological beings. The search for extraterrestrial intelligence is a subset of astrobiology, which encompasses all aspects of the existence of, and search for, extraterrestrial life. Considerations of technology, engineering, and the limits of physics also figure prominently in the efforts to detect evidence of extraterrestrial intelligence (Fig. 1). See also: Artificial intelligence; Astrobiology; Organic evolution
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information