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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Science Fiction Greats on Humanity’s Destiny in Space

Robert Zubrin of the Mars Society talks with Gregory Benford, David Brin, Geoffrey Landis and Larry Niven about terraforming Mars, the origin of life, the drive to explore and more.

Gregory and James Benford on the "Starship Century"

“Starship Century—Toward the Grandest Horizon” is the new collection of fact and fiction assembled by Gregory and James Benford. The brothers are among the leaders of a renaissance in research and thinking about interstellar travel. They have returned to Planetary Radio to talk about this story of human destiny among the stars.