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- Extraterrestrial_Civilizations_(book) abstract "Extraterrestrial Civilizations is a book written by Isaac Asimov in 1979, wherein the probability of there being intelligent extraterrestrial civilizations within the Milky Way galaxy is estimated. This estimation is approached by progressively analyzing the requirements for life to exist.The term "Earth-like world" is prominent, in that the assumption is made that any world where life could evolve would have certain similarities to Earth, such as temperature ranges and gravity sufficient for an atmosphere to exist. Asimov begins with the estimated number of stars in the galaxy, 300 billion.This number is then reduced to 280 billion as stars without planetary systems are discarded, and then furthermore reduced as more factors are taken into consideration. This process culminates in the statement that "the number of planets in our galaxy on which a technological civilization is now in being is roughly 530,000."".
- Extraterrestrial_Civilizations_(book) author Isaac_Asimov.
- Extraterrestrial_Civilizations_(book) dcc "574.999".
- Extraterrestrial_Civilizations_(book) isbn "978-0-517-53075-7".
- Extraterrestrial_Civilizations_(book) lcc "QB54 .A84 1979".
- Extraterrestrial_Civilizations_(book) literaryGenre Science.
- Extraterrestrial_Civilizations_(book) mediaType Paperback.
- Extraterrestrial_Civilizations_(book) numberOfPages "282".
- Extraterrestrial_Civilizations_(book) oclc "4638134".
- Extraterrestrial_Civilizations_(book) wikiPageID "16778929".
- Extraterrestrial_Civilizations_(book) wikiPageRevisionID "602699100".
- Extraterrestrial_Civilizations_(book) author Isaac_Asimov.
- Extraterrestrial_Civilizations_(book) congress "QB54 .A84 1979".
- Extraterrestrial_Civilizations_(book) dewey "574.999".
- Extraterrestrial_Civilizations_(book) genre Science.
- Extraterrestrial_Civilizations_(book) hasPhotoCollection Extraterrestrial_Civilizations_(book).
- Extraterrestrial_Civilizations_(book) isbn "978".
- Extraterrestrial_Civilizations_(book) language "English".
- Extraterrestrial_Civilizations_(book) mediaType "Print".
- Extraterrestrial_Civilizations_(book) name "Extraterrestrial Civilizations".
- Extraterrestrial_Civilizations_(book) oclc "4638134".
- Extraterrestrial_Civilizations_(book) pages "282".
- Extraterrestrial_Civilizations_(book) publisher "Crown".
- Extraterrestrial_Civilizations_(book) releaseDate "1979".
- Extraterrestrial_Civilizations_(book) subject Category:1979_books.
- Extraterrestrial_Civilizations_(book) subject Category:Books_by_Isaac_Asimov.
- Extraterrestrial_Civilizations_(book) type 1979Books.
- Extraterrestrial_Civilizations_(book) type Artifact100021939.
- Extraterrestrial_Civilizations_(book) type Book106410904.
- Extraterrestrial_Civilizations_(book) type BooksByIsaacAsimov.
- Extraterrestrial_Civilizations_(book) type Creation103129123.
- Extraterrestrial_Civilizations_(book) type Object100002684.
- Extraterrestrial_Civilizations_(book) type PhysicalEntity100001930.
- Extraterrestrial_Civilizations_(book) type Product104007894.
- Extraterrestrial_Civilizations_(book) type Publication106589574.
- Extraterrestrial_Civilizations_(book) type Whole100003553.
- Extraterrestrial_Civilizations_(book) type Work104599396.
- Extraterrestrial_Civilizations_(book) type Book.
- Extraterrestrial_Civilizations_(book) type Work.
- Extraterrestrial_Civilizations_(book) type WrittenWork.
- Extraterrestrial_Civilizations_(book) type Book.
- Extraterrestrial_Civilizations_(book) type Book.
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- Extraterrestrial_Civilizations_(book) comment "Extraterrestrial Civilizations is a book written by Isaac Asimov in 1979, wherein the probability of there being intelligent extraterrestrial civilizations within the Milky Way galaxy is estimated.".
- Extraterrestrial_Civilizations_(book) label "Civiltà extraterrestri (saggio)".
- Extraterrestrial_Civilizations_(book) label "Extraterrestrial Civilizations (book)".
- Extraterrestrial_Civilizations_(book) sameAs Civiltà_extraterrestri_(saggio).
- Extraterrestrial_Civilizations_(book) sameAs m.0405v56.
- Extraterrestrial_Civilizations_(book) sameAs Q3678790.
- Extraterrestrial_Civilizations_(book) sameAs Q3678790.
- Extraterrestrial_Civilizations_(book) sameAs Extraterrestrial_Civilizations_(book).
- Extraterrestrial_Civilizations_(book) wasDerivedFrom Extraterrestrial_Civilizations_(book)?oldid=602699100.
- Extraterrestrial_Civilizations_(book) isPrimaryTopicOf Extraterrestrial_Civilizations_(book).
- Extraterrestrial_Civilizations_(book) name "Extraterrestrial Civilizations".