Planetary Radio • Oct 31, 2005

Touring the Planets With Dava Sobel

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.