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Billions and Billions of Earthlike Planets?

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Air Date: 04/21/2008
Run Time: 0:28:52

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What if many or even most of the stars in our galaxy have rocky planets? Now there's evidence of just that from the team of scientists led by University of Arizona astronomer Michael Meyer. He fills us in this week. Emily Lakdawalla is looking at a blue Martian sunset in her Q&A segment, and Bruce Betts calls in from the road for this week's What's Up! with Mat Kaplan, including a new space trivia contest.

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