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“Exploration is in our nature.” - Carl Sagan

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' Axial Tilt: A Key to Gully Formation

Caltech and Brown University’s Jay Dickson joins Planetary Radio to discuss the mysterious formation of gullies on Mars.

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