Season 1

9 episodes · Feb 20, 2002

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S1E1

Alien Planets: Anyone Home?

Feb 20, 2002

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S1E2

The Case for Mars

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S1E3

Lives of Stars

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S1E4

Hubble's Heritage

Mar 20, 2002

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S1E5

Extreme Astronomy

Apr 3, 2002

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S1E6

21st Century Cosmos

Apr 10, 2002

Our perception of the universe has changed dramatically from thoughts of a starry, unknown realm to knowledge of the countless galaxies that surround us, yet the scale of the cosmos remains a mystery. How old is the universe? How much matter and energy does the universe contain? 21st Century Cosmos probes questions of cosmology with international astronomers to refine our understanding of how stars and galaxies are formed, if the universe is flat or curved, and how and why the universe will continue to expand.

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S1E7

Children of Stardust

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S1E8

The Enigma of Venus

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S1E9

Episode 9

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