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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.

AVATAR organ chip

Artemis II’s AVATAR and a sungrazing comet

Lisa Carnell, Director of NASA's Biological and Physical Sciences Division, explains AVATAR, the experiment flying organ chips grown from astronaut cells on Artemis II. Then, asteroid hunter Alain Maury tells the story of discovering a sungrazing comet that could become one of the most spectacular in decades.