Stages of galactic history with respect to extraterrestrial intelligence : note

In this document, Carl Sagan imagines the history of the galaxy with respect to extraterrestrial intelligence. He mentions the first generation of stars, the formation of planets, the evolution of stars, the development of radio telescopes to establish contact between various technical civilizations and a time in the future when the galaxy has been crisscrossed by intelligence many times. From Carl Sagan's "ideas riding" files, a play on "ideas writing." These files contain a running set of initial concepts for various writing projects. This note was cross-filed with Sagan's notes on his novel Contact.

sagan carl contact a novel cosmology radio astronomy ideas riding extraterrestrial intelligence human alien encounters manuscripts stages history respect intelligence note eng the seth macfarlane collection of the carl sagan and ann druyan archive finding our place in the cosmos from galileo to sagan and beyond carl sagan ultra high resolution high resolution

01/01/1973

Library of Congress

http://www.loc.gov/

Public Domain