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Watch Cosmos A SpaceTime Odyssey Season 3 Episode 6 online. Maybe available on Youtube, Netflix, PrimeVideo, Hulu, Disney and other legal streaming platforms.

A child lies on the rug of a tenement, dreaming of interstellar adventures. At the dawn of the space age, a young Carl Sagan's career is forged in the clash of his mentors: two scientific titans, astronomer Gerard Kuiper and chemist Harold Urey. Sagan goes on to realize his childhood dreams, carrying their research forward and communicating its significance to the whole world.