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. The full show archive is available for free.

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Amateur Astronomers Work To Save Earth From Asteroids!

Seven astronomers have been selected to receive Shoemaker NEO (Near Earth Object) grants from the Planetary Society. They and their observatories span the planet. We’ll meet an American and an Australian. Society Chief Scientist Bruce Betts provides an overview of the grant program and later returns for this week’s edition of What’s Up. The Planetary Society’s Kate Howells reports on the outlook for space funding in Canada’s newly-released federal budget. She and Society CEO Bill Nye also met with Prime Minister Justin Trudeau.

Visiting the Birthplace of PlanetVac

Space is hard. Sample collection and return is harder still. That’s why the radically-simplified PlanetVac system from Honeybee Robotics is so intriguing.

Buzz Aldrin and Other Martians

He walked with Neil Armstrong on the moon, but that may not be his greatest legacy. Buzz Aldrin was joined by other space stars at the recent Humans To Mars Summit.

The Worlds of TRAPPIST-1

The discovery of seven, Earth-sized planets in a nearby solar system was announced last week. Astrophysicist and planetary scientist Sara Seager joins us to share her excitement about this find that includes three planets in the habitable zone.

Planetary Radio Live: Near Earth Objects—The Killer Asteroid Threat

Leaders of the quest to find, understand and protect ourselves from the asteroids and comets called Near Earth Objects gathered with host Mat Kaplan for a live conversation about this existential threat from space.

A Big Test for LightSail 2

The Planetary Society’s solar sail spacecraft was in the middle of a critical test as we spoke with the Society’s Bruce Betts and Jason Davis.

Planetary Radio Extra: LightSail Update

The Planetary Society's Bruce Betts and Jason Davis join host Mat Kaplan for a status report on LightSail 2, the Society's next solar sail, now being prepared for launch as soon as late this year.

Planetary Radio Extra: Planetary Society Experts 2015 Review

Bruce Betts, Jason Davis, Casey Dreier and Emily Lakdawalla gather with Mat Kaplan for a fascinating and informative Planetary Radio Extra year-in-review roundtable discussion.

Planetary Radio Live at the New Horizons Pluto Encounter

Join our live audience for highlights of an amazing evening, featuring Jim Bell, Bruce Betts, Mike Brown, Emily Lakdawalla, Linda Spilker, and Bill Nye the Science Guy.

The Exciting Year Ahead on the Final Frontier

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

2014: The Year in Space

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.

Planetary Radio Live! We See Thee Rise: The Canadian Space Program

We welcomed 1,600 Canadian space enthusiasts to the University of Toronto for our October 1st celebration of Canada in space! Join Mat Kaplan and Bill Nye with their guests, Canadian space writer Elizabeth Howell, University of Western Ontario planetary scientist Gordon “Oz” Osinski, and Canadian Space Agency astronaut Jeremy Hansen. Bruce Betts appeared via Skype to lead a rousing Random Space Fact cheer on What’s Up.

Planetary Radio Live: The LightSail Countdown Begins!

LightSail, the Planetary Society’s innovative solar sail cubesat, will ride into space on the huge SpaceX Falcon Heavy, now in development. Bill Nye and others join us for a live celebration of this announcement.

Planetary Radio Live at the USA Science and Engineering Festival with Mike Rowe of Dirty Jobs

Join us at the world’s biggest public science event in Washington DC, where we talk about dirty jobs in space with television’s terrific Mike Rowe.

Amy Mainzer Is Hunting Asteroids With NEOWISE

Take a spacecraft that can no longer survey the realm of galaxies and repurpose it to discover thousands of much nearer asteroids and comets. Put it to sleep for 2.5 years, then wake it up and start discovering even more! JPL’s Amy Mainzer is Principal Investigator for NEOWISE, the mission using this amazing space telescope.

Planetary Radio Live Celebrates the Launch of MAVEN

The successful launch of MAVEN was covered by Mat Kaplan, Bruce Betts and Emily Lakdawalla, with special, launch site reports from Jim Bell and Bill Nye.

PLANETARY RADIO LIVE: LADEE Launches for Luna

Planetary Radio returned to the Crawford Family Forum for live coverage of the LADEE launch on September 6th.

Remembering Bruce Murray

The passing of Planetary Society co-founder and former JPL Director Bruce Murray has been marked around the world. Planetary Radio takes its turn with this special tribute.

ALMA Adventure

The first of two shows about Mat Kaplan's journey to Chile's Atacama Desert for the inauguration of the Atacama Large Millimeter small millimter Array, the most ambitious, Earth-based astronomy project in history.

Looking Back, Looking Forward: Beginning a New Year In Space

Planetary Society experts review the challenges and triumphs of 2012 and look forward to a new and exciting year. You’ll hear Bill Nye the Science Guy, Emily Lakdawalla on new missions, Casey Dreier on “Saving our Science,” and Bruce Betts’ review of great projects, as well as a musical rendition of “Random Space Fact.”

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