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What a Planet Needs to Become Earth-Like
The search for Earth-like planets beyond our solar system is the search for the special conditions that have allowed our planet to develop a stable biosphere.
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Cosmic Journeys:   What a Planet Needs to Become Earth-Like
The search for Earth-like planets beyond our solar system is the search for the special conditions that have allowed our planet to develop a stable biosphere.
Aired: 5/4/11
Views: 2343
Network:  SpaceRip
 
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