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Planetary Radio

Planetary Radio

Each week, Planetary Radio visits with a scientist, engineer, project manager, astronaut, advocate or writer who provides a unique and exciting perspective on the exploration of our solar system and beyond. We also showcase regular features that raise your space IQ while they put a smile on your face.  Host Mat Kaplan is joined by Planetary Society colleagues Bill Nye the Science Guy, Bruce Betts, and Emily Lakdawalla. We hit the road now and then to produce a Planetary Radio Live show in front of an audience.  Drop us a line or enter the weekly space trivia contest at

Please support your local public radio station that airs the show! Check the station's online schedule or review our online list of affiliates. Satellite radio listeners can hear us Sunday evenings on the Sirius XM Public Radio channel.  Want to hear Planetary Radio on your local station? Ask them to contact us or review our radio affiliate information page.

iTunes and other podcast aggregators like Stitcher make it easy to listen and subscribe. Just search for "Planetary Radio." or click the links below.

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Recent Shows

Alan Stern and a Triumph at Pluto

10/25/2016 | 38:02


  • Alan Stern, New Horizons Principal Investigator, Johns Hopkins University Applied Physics Laboratory

Alan Stern of the New Horizons mission to Pluto and beyond was in Pasadena for the annual meeting of the American Astronomical Society’s Division for Planetary Sciences. He joined Mat Kaplan for a very special conversation down the street at Planetary Society HQ.

More Info & Listen »

Charley Kohlhase and the Greatest Voyage

10/18/2016 | 58:54


How did the Voyager spacecraft manage to weave their magnificent way through the outer planets of our solar system? Mission Design Manager Charley Kohlhase led the team that crunched the numbers to select the best possible trajectory from 10,000 candidates.

More Info & Listen »

Trekkin’ Across the Universe With Andrew Fazekas

10/11/2016 | 46:06


  • Andrew Fazekas, Science writer and broadcaster, National Geographic and CBC-Radio Canada

The Night Sky Guy, Andrew Fazekas, talks about his beautiful new, Star Trek-inspired guide to the real wonders of astronomy.

More Info & Listen »

Farewell Rosetta!

10/04/2016 | 30:38


  • Emily Lakdawalla, Senior Editor and Planetary Evangelist, The Planetary Society

The European Space Agency’s magnificent Rosetta mission ended last week as the spacecraft gently touched down on the comet it has revealed.

More Info & Listen »

Rocket Road Trip!

09/27/2016 | 33:17


Planetary Society Digital Editor Jason Davis returns with the story of the ten-day trek across the South he just completed with two Society colleagues.

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OSIRIS-REx: The Voyage to Bennu Begins, With Dante Lauretta

09/13/2016 | 28:50


  • Dante Lauretta, OSIRIS-REx Principal Investigator, University of Arizona

In two years a Near Earth Asteroid now known as Bennu will have a visitor from Earth. OSIRIS-REx Principal Investigator Dante Lauretta reports on his mission’s successful launch.

More Info & Listen »

Spinoffs! Sharing NASA Technology

09/06/2016 | 28:50


  • Daniel Lockney, Technology Transfer Program Executive, NASA Headquarters

In its nearly five decades, NASA has created or improved thousands of technologies, processes and innovations. Dan Lockney is in charge of making sure these solutions are found and utilized by industries and others in need.

More Info & Listen »

Could the Soviet Union Have Won the Space Race?

08/23/2016 | 46:49


Space historian and policy expert John Logsdon joins Mat Kaplan for a fascinating conversation about how the US could have lost the race to the moon.

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Sailing the Canyons of Titan

08/16/2016 | 38:39


Steep canyons on Saturn's moon Titan are filled with liquid methane. That's the discovery just announced by an international team of Cassini scientists, including Alex Hayes.

More Info & Listen »

Subcontractors: Making Space Happen

08/09/2016 | 28:50


  • Dion Jackson, Program Director, USC Center for Economic Development
  • G. Marie Talnack, Director of Technology Transfer, Cal Poly Pomona
  • Bill Galary, Senior Engineer, Nye Lubricants
  • Bob Hoffman, Regional Engineering Manager, Western Regional Sales, Nye Lubricants

You may never hear their names, but there are thousands of small to medium-sized companies without which space exploration and development wouldn’t happen.

More Info & Listen »

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