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.

Search Planetary Radio

Digging for Dollars on the Moon: The Lunar Regolith Challenge

Special coverage of NASA's Lunar Regolith Challenge, with robot excavators after a $250,000 prize.