• Anglický jazyk

Extraterrestrial life

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Source: Wikipedia. Pages: 108. Chapters: Fermi paradox, Hypothetical types of biochemistry, SETI, Pioneer 10, Kardashev scale, Martian, Astrobiology, Alien abduction, Life on Mars, Extraterrestrial hypothesis, Martian geyser, Planetary objects proposed in... Viac o knihe

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Source: Wikipedia. Pages: 108. Chapters: Fermi paradox, Hypothetical types of biochemistry, SETI, Pioneer 10, Kardashev scale, Martian, Astrobiology, Alien abduction, Life on Mars, Extraterrestrial hypothesis, Martian geyser, Planetary objects proposed in religion, astrology and ufology, Post-detection policies, Little green men, Life on Titan, Alien language, Pioneer plaque, Xenoarchaeology, Exoconsciousness, Allan Hills 84001, Project Cyclops, Great Filter, Bruce Maccabee, The Millennial Project: Colonizing the Galaxy in Eight Easy Steps, Starchild skull, List of life forms, Cosmic pluralism, Metalaw, Steven J. Dick, Alisson gothz, Zoo hypothesis, Exotheology, Neocatastrophism, Noogenesis, Extra-Terrestrial Exposure Law, Project Ozma, The Science of Aliens, Andrew G. Haley, Shergotty meteorite, Back-contamination, Planetarium hypothesis, Forward-contamination, San Marino Scale, Shermer's Last Law. Excerpt: The Fermi paradox is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial civilizations and the lack of evidence for, or contact with, such civilizations. The age of the universe and its vast number of stars suggest that if the Earth is typical, extraterrestrial life should be common. In an informal discussion in 1950, the physicist Enrico Fermi questioned why, if a multitude of advanced extraterrestrial civilizations exists in the Milky Way galaxy, evidence such as spacecraft or probes is not seen. A more detailed examination of the implications of the topic began with a paper by Michael H. Hart in 1975, and it is sometimes referred to as the Fermi-Hart paradox. Other common names for the same phenomenon are Fermi's question ("Where are they?"), the Fermi Problem, the Great Silence, and silentium universi (Latin for "the silence of the universe"; the misspelling silencium universi is also common). There have been attempts to resolve the Fermi paradox by locating evidence of extraterrestrial civilizations, along with proposals that such life could exist without human knowledge. Counterarguments suggest that intelligent extraterrestrial life does not exist or occurs so rarely or briefly that humans will never make contact with it. Starting with Hart, a great deal of effort has gone into developing scientific theories about, and possible models of, extraterrestrial life, and the Fermi paradox has become a theoretical reference point in much of this work. The problem has spawned numerous scholarly works addressing it directly, while questions that relate to it have been addressed in fields as diverse as astronomy, biology, ecology, and philosophy. The emerging field of astrobiology has brought an interdisciplinary approach to the Fermi paradox and the question of extraterrestrial life. The Fermi paradox is a conflict between an argument of scale and probability and a lack of evidence. A more complete definition could

  • Vydavateľstvo: Books LLC, Reference Series
  • Rok vydania: 2011
  • Formát: Paperback
  • Rozmer: 246 x 189 mm
  • Jazyk: Anglický jazyk
  • ISBN: 9781157461654

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