Join Donate

Planetary Radio Episodes

For every week 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. We also showcase regular features that raise your space IQ while they put a smile on your face.

Search Planetary Radio

Flying the Skies of Saturn’s Moon Titan

January 16, 2019 • 45:47

magine soaring over what may be the solar system’s most Earth-like world, if you ignore the chill. If funded, the nuclear electric-powered Dragonfly will do exactly this. Principal Investigator Elizabeth “Zibi” Turtle shares her enthusiasm.

It’s a Hard Rain on Titan

January 17, 2018 • 43:41

A computer model based on our best data about Saturn’s cloud-shrouded moon says that torrential liquid methane pounds the surface far more frequently than previously expected. Sean Faulk and Jonathan Mitchell of UCLA explain.

Nazis in Space? Rod Pyle’s Amazing Stories of the Space Age

February 15, 2017 • 52:45

Rod Pyle reveals bizarre yet fascinating space projects of the past in his new book. Pyle also exposes previously classified information about missions and spacecraft you thought you knew.

Space Policy Edition #3: Plutonium-238, Europa via SLS, Cost of the Next Mars Rover Rises

August 05, 2016 • 1:03:06

In our third episode, we debate the risks and rewards of tying the future of a Europa mission to the fate of NASA's massive Space Launch System rocket. Also, NASA just announced that the next Mars rover will cost $2.4 billion—$900 million more than initially thought. But the mission is not considered over budget. Why not? Lastly, the U.S. just generated 50 grams of Plutonium-238, the largest amount in nearly thirty years. We celebrate the successful effort to create this critically important, though highly toxic, power source for deep space spacecraft.

NASA’s Science Leader John Grunsfeld

May 17, 2016 • 28:50

John Grunsfeld closes our coverage of the Space Foundation’s 32nd annual Space Symposium in Colorado Springs. We also meet the leaders of the New Generation Space Leaders Program.

Planetary Society logo

Support The Planetary Society


Help Planetary Radio amplify its broadcast

Contribute Now