When did Cosmic Journeys Season 1 Episode 13 air?
Cosmic Journeys Season 1 Episode 13 aired on June 9, 2010.


Cutting-edge stories about the origins of the universe, black holes, exploding stars, the search for ET life, and the nature of the planets. How did the universe begin? Where will it end? Are there other worlds like Earth?

Long ago, from the fires of our Sun's birth, twin planets emerged: Venus and Earth. Nature draped one world in the greens and blues of life, while enveloping the other in acid clouds, high heat, and volcanic flows. Why did Venus take such a disastrous turn and Earth developed a vibrant biosphere?
Direct answers for episode-level questions and details.
Cosmic Journeys Season 1 Episode 13 aired on June 9, 2010.
This episode runs for approximately 24 minutes.
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