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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

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 »

At Space Symposium With the Leader of the European Space Agency

05/03/2016 | 31:22


The annual Space Symposium in Colorado is a must-attend event for space leaders from around the world. Our coverage begins with United Arab Emirates Space Agency Director General Mohammed Nasser Al Ahbabi, and then moves to ESA Director General Jan Woerner and Chief Scientist Bernard Foing.

More Info & Listen »

Celebrating Yuri’s Night 2016 with Astronaut Samantha Cristoforetti

04/12/2016 | 28:50


Happy Yuri’s Night! We’re partying under Space Shuttle Endeavour in the first of two shows featuring interviews from the worldwide celebration of space. Star Trek’s Robert Picardo will talk about his new video newsletter, the Planetary Post, and we’ll visit with Samantha Cristoforetti, who returned last June from 200 days aboard the International Space Station.

More Info & Listen »

From Mars to the Stars With Lou Friedman

11/10/2015 | 47:33


The founding Executive Director of the Planetary Society has just written “Human Spaceflight: From Mars to the Stars,” an optimistic view of humanity’s future in the solar system and beyond.

More Info & Listen »

A 35th Anniversary Party With Neil Tyson!

11/03/2015 | 31:47


It was a grand night at the Pasadena Civic Auditorium. CEO Bill Nye led the Planetary Society’s 35th anniversary party with guests including Neil deGrasse Tyson and Deputy NASA Administrator Dava Newman. We present a very brief sampling of the celebration.

More Info & Listen »

Jim Bell Welcomes “The Interstellar Age”

03/03/2015 | 46:07


  • Jim Bell, President of the Board of Directors, The Planetary Society

Planetary scientist and author Jim Bell has just written “The Interstellar Age—Inside the Forty-Year Voyager Mission.” He talks with Mat Kaplan about the magnificent grand tour of the outer solar system that is now headed toward the stars.

More Info & Listen »

LightSail Prepares to Take Flight

01/27/2015 | 28:50


  • Doug Stetson, LightSail Project Manager, The Planetary Society
  • Jason Davis, Digital Editor, The Planetary Society

The Planetary Society has just announced that LightSail will be launched into orbit on its first test flight in May. We’ll talk with Project Manager Doug Stetson and embedded LightSail reporter Jason Davis about what to expect.

More Info & Listen »

The Exciting Year Ahead on the Final Frontier

01/06/2015 | 28:50


  • Bruce Betts, Director of Science and Technology, The Planetary Society
  • Jason Davis, Digital Editor, The Planetary Society
  • Casey Dreier, Director of Space Policy, The Planetary Society
  • Emily Lakdawalla, Senior Editor and Planetary Evangelist, The Planetary Society
  • Bill Nye, Chief Executive Officer

The Planetary Society’s experts look forward to a great year of firsts in the solar system and beyond.

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2014: The Year in Space

12/30/2014 | 28:50


Our annual review of the greatest events and accomplishments over the last year features analysis and commentary by Bill Nye the Science Guy, Emily Lakdawalla, Jason Davis, Casey Dreier and Bruce Betts, along with a special new year’s gift of Neil deGrasse Tyson.

More Info & Listen »

Orion Launches Into History

12/09/2014 | 28:50


NASA’s Orion spacecraft has taken its first step toward Mars and an asteroid mission. The Planetary Society’s Jason Davis was at the Kennedy Space Center for the December 5 mission.

More Info & Listen »

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