7 Episodes

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Season 2

Episodes

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  • 7 episodes
    7 episodes
    • s2e7Green Builders
    • s2e6400 Years of the Telescope
    • s2e5Phoenix Mars Mission: Ashes to Ice
    • s2e4Window to the Sea
    • s2e3Journey to Palomar
    • s2e2Global Warming: The Signs and the Science
    • s2e1NOVA: Solar Energy: Saved by the Sun