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Direct Contact Among Galactic Civilizations by Relativistic Interstellar SpaceflightDirect contact among galactic populations by relativistic interstellar spaceflight
Document ID
19630011050
Document Type
Reprint (Version printed in journal)
Authors
Sagan, Carl (Stanford Univ. Palo Alto, CA, United States)
Date Acquired
August 1, 2013
Publication Date
November 15, 1962
Subject Category
SPACE RADIATION
Funding Number(s)
CONTRACT_GRANT: NSG-126-61
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
GALAXY
INTERSTELLAR TRAVEL
RELATIVISTIC VELOCITY

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