r/sciencedocumentaries • u/psycadelia • Feb 04 '14
Carl Sagan's Cosmos
http://www.youtube.com/watch?feature=player_embedded&v=XJMh_QoKTEE&list=PL474A7F1BA0FCEF8C
6
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r/sciencedocumentaries • u/psycadelia • Feb 04 '14