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Extraterrestrial civilizations: Problems of their evolutionThe problem of finding extraterrestrial civilizations and establishing contact with them is directly related to the problem of their evolution. Possible patterns in this evolution and the stages in the evolution of extraterrestrial civilizations are examined.
Document ID
19870017977
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Leskov, L. V. (NASA Headquarters Washington, DC United States)
Date Acquired
September 5, 2013
Publication Date
August 1, 1987
Subject Category
Space Biology
Report/Patent Number
NAS 1.77:20060
NASA-TT-20060
Accession Number
87N27410
Funding Number(s)
CONTRACT_GRANT: NASW-4006
Distribution Limits
Public
Copyright
Public Use Permitted.
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