Planetary Radio • Oct 31, 2005

Touring the Planets With Dava Sobel

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On This Episode

The author of Longitude and Galileo's Daughter turns her terrific skills to our solar system in her new book, The Planets. Emily Lakdawalla can't find a drop of water on Jupiter's moon Io in this week's Q and A, and Bruce Betts celebrates a close pass by Mars on What's Up.