Since 2002, Planetary Radio has visited with a scientist, engineer, project manager, advocate, or writer who provides a unique perspective on the quest for knowledge about our solar system and beyond. The full show archive is available for free.

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Mars Exploration Rover Update

Planetary Radio gets a Mars Exploration Rover status report from Deputy Project Scientist, Dr. Albert Haldemann; Emily Lakdawalla can tell how old a planet is from its surface.