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03/28/2008
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Mar. 28, 2008
What's a Planet, Anyway?
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| In 2006, astronomers voted to remove Pluto from the list of planets in our solar system -- but the controversy over just what should be called a planet lives on. This week, writing in a commentary in the journal Science, planetary scientist Mark Sykes argues that a planet should be defined simply as 'a round object orbiting a star.' We'll talk with him about why that should be, and whether the definition of planet really matters. |
Produced by Karin Vergoth
Guests
-
Mark Sykes
Director, Planetary Science Institute
Tucson, Arizona
FEATURED READING
Brilliant Blunders
by Mario Livio
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