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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A Return to Asteroid Mining, and Digging Into Space Ethics with Joel Sercel

Joel Sercel believes we are entering an era in which asteroid mining and other commercial development of space are imminent, but he’s concerned about how we will avoid the mistakes of past eras of human expansion.

Space Innovations So Incredible, They Just Might Work

Mat Kaplan reports from the 2019 NIAC Symposium, a showcase of NASA-funded technologies hoping to revolutionize space exploration.