Planetary Radio: Space Exploration, Astronomy and Science


Planetary Radio brings you the human adventure across our solar system and beyond. We visit each week with the scientists, engineers, leaders, advocates and astronauts who are taking us across the final frontier. Regular features raise your space IQ while they put a smile on your face. Join host Mat Kaplan and Planetary Society colleagues including Bill Nye the Science Guy, Bruce Betts, and Emily Lakdawalla as they dive deep into the latest space news. The monthly Space Policy Edition takes you inside the DC beltway where the future of the US space program hangs in the balance. Visit for the space trivia contest, an episode guide, and much more.


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Title: Make Room! Worlds May Crowd Some Habitable Zones

Katie Mack and The End of Everything

August 26th, 2020

Known as Astrokatie to her 370 thousand Twitter followers, astrophysicist and cosmologist Katie Mack has written a funny, fantastic guide to the end of… Go to Episode

Make Room! Worlds May Crowd Some Habitable Zones

August 19th, 2020

Newly-published research led by Stephen Kane finds room for as many as 6 habitable zone planets around some stars. Why then is Earth on its own? The UC… Go to Episode

Another Ray Gun Heads for Mars. We Hear It Working.

August 12th, 2020

First there was ChemCam on Mars rover Curiosity. Now, SuperCam is on its way to the Red Planet aboard Perseverance. We’ll talk with principal investigator… Go to Episode

Space Policy Edition: Why the SLS is a National Asset, and Why That Matters

August 7th, 2020

How spacefaring nations prioritize funding can be just as important, if not more so, than the capabilities of the commercial sector, says Dr. Mary Lynne… Go to Episode