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Alien Planets: Anyone Home?

Alien Planets: Anyone Home?

Episode number: 1
The Case for Mars

The Case for Mars

Episode number: 2
Lives of Stars

Lives of Stars

Episode number: 3
Hubble's Heritage

Hubble's Heritage

Episode number: 4
Extreme Astronomy

Extreme Astronomy

Episode number: 5
21st Century Cosmos

21st Century Cosmos

Episode number: 6

Overview: 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.

Children of Stardust

Children of Stardust

Episode number: 7
The Enigma of Venus

The Enigma of Venus

Episode number: 8
Episode 9

Episode 9

Episode number: 9