The Backbone of Night is an episode of Cosmos starring Carl Sagan and Jaromír Hanzlík. Carl Sagan looks at the work of ancient Greek scientists and astronomers including Thales, Anaximander, Democritus, and Pythagoras.
Runtime: 50 minutes
Stars: Carl Sagan, Jaromír Hanzlík
Director: Adrian Malone, David Kennard, Carl Sagan, Ann Druyan, Steven Soter