This is a clip from episode #8 of 13 titled Journey's in Space and Time.
http://science.discovery.com/convergence/cosmos/cosmos.html
http://www.carlsagan.com/
http://www.youtube.com/view_play_list?p=B2DA336432E98896
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Carl Sagan Cosmos - How many stars are in the universe
This is a clip from episode #8 of 13 titled Journey's in Space and Time.
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