Planetary Radio • December 31, 2007
Chief Scientist / LightSail Program Manager, The Planetary Society
Solar System Specialist, The Planetary Society
Mat Kaplan is joined by Emily Lakdawalla and Bruce Betts for a review of 2007's biggest planetary science stories. Bruce sticks around for this week's edition of What's Up, including a new space trivia contest.
December 31, 2007
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