Carl Sagan’s Cosmos – The Backbone of Night

Today on Discovery Enterprise we present the seventh episode of Carl Sagan’s highly acclaimed PBS documentary series – Cosmos: The Backbone of Night.

In this instalment of Cosmos we follow Dr. Carl Sagan on a voyage through time and space and trace the story of ancestor’s attempts to make sense of the night sky.


The stars were thought to be campfires in the heavens, and the great expanse of stars known as the Milky Way was the “backbone of the night.” Dr. Sagan goes back to his childhood elementary school where the question “What are stars?” is the subject of discussion.

Carl Sagan’s Cosmos – The Backbone of Night

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