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  • The Complete Cosmos

Cosmos | One Voice in the Cosmic Fugue | PBS

Duration: 01:00:09 (Full Program)
Program: The Complete Cosmos #102
Broadcast Date: Oct. 5, 1980

Dr. Sagan's cosmic calendar makes the history of the universe understandable and frames the origin of the Earth and the evolution of life.

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Post Date: March 19, 2009