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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.

Subscribe: Planetary Radio: Space Exploration, Astronomy and Science Standard RSS Feed

Recent Shows

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 »

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 »

Planetary Radio Extra: Checking in on NASA's Budget with the Planetary Society's Director of Advocacy Casey Dreier

08/18/2015 | 36:18


Mat Kaplan sits down with our Director of Advocacy, Casey Dreier, for a deep dive into current space policy.

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Countdown to LightSail: An Update

04/28/2015 | 28:50


The road to space has been a rocky one for most spacecraft, and LightSail is no different. Challenges remain even with the May 20th launch of a test mission approaching. Embedded LightSail reporter Jason Davis checks in with the latest news.

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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.

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2014: The Year We Landed on a Comet

11/25/2014 | 28:50


  • Mark McCaughrean, Senior Science Advisor, European Space Agency Directorate of Science and Robotic Exploration

Not just landed. Orbited, too. European Space Agency Senior Science Advisor Mark McCaughrean helps us celebrate the Rosetta orbiter and the Philae lander.

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Dr. Bell Goes to Washington

09/16/2014 | 28:50


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

Planetary Scientist Jim Bell of Arizona State University joined other experts in front of the US House of Representatives Space Committee on September 10th. Get his report this week.

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Spinoff 2013: Bringing Space Technology Home

05/13/2014 | 32:43


NASA has just published "Spinoff 2013," the latest of its annual reports on outstanding innovations developed for space that are solving problems and improving lives here on Earth. Technology Transfer Program Executive Daniel Lockney is our guest.

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Special Planetary Radio Advocacy Report From Casey Dreier: A Good Week in Washington

05/13/2014 | 23:49


Planetary Radio host Mat Kaplan learns why Director of Advocacy Casey Dreier is cautiously optimistic about the budget outlook for planetary science and exploration, so long as Planetary Society members and others keep making their voices heard in the nation's capitol.

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Neil deGrasse Tyson

05/06/2014 | 39:55


The host of COSMOS: A Spacetime Odyssey, returns to our show with a behind the scenes look at the spectacular television series.

More Info & Listen »

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