Results 151 to 160 of about 11,825 (205)
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Extraterrestrial Intelligence? Not Likely
Annals of the New York Academy of Sciences, 2001Abstract: The possibility that there exist extraterrestrial creatures with advanced intelligence is considered by examining major events in mammalian, primate, and human evolution on earth. The overwhelming evidence is that the evolution of intelligence in creatures elsewhere who have the capability to communicate with us is vanishingly small.
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The Search for ExtraTerrestrial Intelligence
Springer Proceedings in Physics, 2021exaly +2 more sources
The search for extraterrestrial intelligence
Nature, 2001As far as we know, humanity is alone in the Universe: there is no definite evidence for the existence of extraterrestrial life, let alone extraterrestrial civilizations (ETCs) capable of communicating or travelling over interstellar distances. Yet popular speculation about the existence of ETCs abounds, including reports of alien visitations either now
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The recognition of extraterrestrial intelligence
Proceedings of the Royal Society of London. Series B. Biological Sciences, 1975Abstract A necessary but not sufficient condition for the recognition of extra-terrestrial intelligence is a significant departure from thermodynamic equilibrium. This can be discerned clearly in the inverse problem of the detection of terrestrial intelligence from a distance. Photography of the Earth in reflected sunlight reveals no
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The Search for Extraterrestrial Intelligence
2023Abstract This chapter discusses the search for extraterrestrial intelligence (SETI). Sagan’s Principle of Mediocrity claims that just as the Earth was not special (not at the center of the universe), humans are also average, and thus there should be many other intelligent species in the universe.
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Chasing Extraterrestrial Intelligence
Current History, 2023The search for intelligent life elsewhere in the universe has continued for decades without yielding any tangible results, as experts debate active versus passive approaches and the risks involved in sending signals of humans’ presence.
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The search for extraterrestrial intelligence
Physics Education, 2002The modern era of the search for extraterrestrial technological intelligence (SETI) began in 1960 when a radiotelescope was used to see if any messages were being sent from the vicinity of two nearby stars. Since then there have been many searches, and not just with radiotelescopes. So far ETI has not been found, but the search has only just begun.
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Tsiolkovsky and extraterrestrial intelligence
Acta Astronautica, 2000Abstract Where is everybody? Fermi’s famous question about the apparent absence of evidence of extraterrestrials and the answers to it offered by Ball, Kuiper and Morris during the search for extraterrestrial intelligence (SETI) debates of the 1970s were anticipated in the writings of the pioneering Russian space theorist Konstantin Tsiolkovsky ...
B Finney, V Lytkin, L Finney
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