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  • “Exploration is in our nature.” - Carl Sagan

Planetary Radio Episodes

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.

Dinner With an Astronaut book cover

Book Club Edition: Dinner With an Astronaut by Leroy Chiao

Former astronaut Leroy Chiao is our guest for a conversation about his book, “Dinner With an Astronaut,” and a lifetime of accomplishments on and off the planet.