Alien Earths with Alan Boss

Alien Earths with Alan Boss

Last month, NASA launched the Kepler Space Mission. The goal: to discover Earth-like planets orbiting other stars outside our own solar system. We find out why so many scientists are convinced that so-called 'alien earths' do exist.

Last month, NASA launched the Kepler Space Mission. The goal: to discover Earth-like planets orbiting other stars outside our own solar system. We find out why so many scientists are convinced that so-called 'alien earths' do exist.

Guests

Alan Boss

Research Scientist, Department of Terrestrial Magnetism, Carnegie Institution for Science; and author of "The Crowded Universe: The Search for Living Planets" (Basic Books)

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