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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

Movers and Shakers at SpaceCom Expo

11/24/2015 | 31:16


  • Chris Biddy, CEO and Founder, Aquila Space
  • James Causey, Executive Director, SpaceCom Expo
  • John Elbon, Vice President and General Manager, Boeing Space Exploration Division
  • Jeff Greason, CEO, XCOR Aerospace
  • Wendy Niemann, Associate Director of Industry Development, Destination Imagination
  • Ellen Ochoa, Director and Former Astronaut, NASA Johnson Space Center

We join 1,600 space entrepreneurs and visionaries in Houston, and talk with Boeing, XCOR, Johnson Space Center Director Ellen Ochoa and more.

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 »

Big Rockets and Little LightSails

10/13/2015 | 28:50


Digital editor Jason Davis is a lucky guy. He follows and reports on human spaceflight progress, as well as the progress of the LightSail solar sail, which is about a year from its next flight.

More Info & Listen »

Humans Orbiting Mars!

09/29/2015 | 37:56


Scott Hubbard and John Logsdon led the Humans Orbiting Mars Workshop last spring. They return with Casey Dreier as the report on that workshop is released to the world.

More Info & Listen »

Living Under the Sea With NASA Aquanaut David Coan

08/18/2015 | 32:12


  • David Coan, NASA Engineer and NEEMO 20 Aquanaut, NASA Johnson Space Center

Mat Kaplan talked with engineer and NEEMO Expedition 20 team member David Coan while he was hard at work with astronauts and other engineers living in the Aquarius undersea habitat.

More Info & Listen »

Chris Carberry and Getting Humans to Mars

06/02/2015 | 28:50


Explore Mars revealed the 2015 Humans to Mars Report at a recent conference in Washington. CEO Chris Carberry gives us a quick tour of this inspiring assessment of what it will take to get more than robots to the Red Planet.

More Info & Listen »

Rob Manning and Landing on Mars

04/14/2015 | 39:56


  • Rob Manning, Chief Engineer, Mars Exploration Directorate, Jet Propulsion Laboratory

Landing on Mars is hard, and the bigger you are, the harder it gets. Rob Manning returns to tell us about one of NASA’s best hopes for getting much bigger spacecraft down there—spacecraft that may one day carry humans.

More Info & Listen »

Humans Orbiting Mars: Report on the Workshop

04/07/2015 | 37:28


A human mission to orbit Mars might be possible by 2033, and it might be accomplished at reasonable cost and with existing or nearly-ready technology. Three leaders of a recent Washington DC conference on this topic provide a report.

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Robert Bigelow and His Expandable Space Habs

03/31/2015 | 28:50


Bigelow Aerospace’s BEAM expandable/inflatable space module will be attached to the International Space Station later this year. Mat travels to the company’s headquarters for a conversation with founder and CEO Robert Bigelow.

More Info & Listen »

Big News From Little Worlds

03/24/2015 | 28:50


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

Senior Editor Emily Lakdawalla has returned from the Lunar and Planetary Science Conference in Texas with the latest revelations about our solar system. She shares them in an extended report.

More Info & Listen »

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