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Overview
From the planets to the stars and out to the edge of the unknown, history and science collide in a wondrous yet deadly adventure through space and time.
Seasons
Specials
20054 episodes
Season 1: Our Solar System
200714 episodes
Season 2
200718 episodes
Season 3
200812 episodes
Season 4
200912 episodes
Season 5
20108 episodes
Season 6
20117 episodes
Season 7
20127 episodes
Season 8
20144 episodes
Season 9
20156 episodes
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