Explore Worlds
Find Life
Defend Earth
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.
Search Planetary Radio
We celebrate our 5th anniversary by learning about discovery of a five-planet star system, the largest found so far. Q&A on Jupiter's red spot.
John Callas provides a status report on Spirit and Opportunity. Emily Lakdawalla is looking at brilliant Comet Holmes in her Q&A report, and Bruce Betts also makes room for Holmes in his What's Up! review of the night sky.
The Most Earthlike Extrasolar Planet Yet -- A Conversation With Co-Discoverer Stephane Udry
A Planetary System That Looks Like Home
Landing people on Mars will be hard, but JPL's Rob Manning and other engineers are working on solutions.
One Martian year of Spirit and Opportunity on Mars with Jim Bell, Cornell University; Q and A on a crusty moon; special trivia contest prize.
By the Light of a New World
As the incredibly successful Mars Exploration Rover mission continues, Planetary Radio talks with Spirit's manager about what is being accomplished. We also hear from the second pair of Student Astronauts.
We celebrate one (Earth) year of Mars Exploration Rovers on the red planet with Principal Investigator Steve Squyres and Project Manager Jim Erickson; Emily Lakdawalla goes where no spacecraft has gone before.
Billions of Earths?
Hunting for Extrasolar Planets
Steve Squyres and Phil Christensen discuss Opportunity's latest goal, Endeavour Crater; Emily Lakdawalla knows how to find a spacecraft sailing out beyond Pluto, and Bruce Betts has a lock on a couple of comets.
This week we hear about the strategically located magnets on the Mars Exploration Rovers and how are telling us more about the red planet.
With lots to celebrate, The Planetary Society threw a party for the scientists and engineers who have made Spirit and Opportunity such amazing successes, and you're invited!
We visit Harvard biologist Andrew Knoll for a conversation about finding life on the red planet. Emily Lakdawalla is seeing red on another of Earth's neighbors, and Bruce Betts spins a tale of Death Stars, cockroaches and trivia contests on What's Up!
Planetary Radio talks with the developer of the Pancam on the Mars Exploration Rovers, Jim Bell. We also feature the last pair of Student Astronauts, and another visit with Astrobots Biff Starling and Sandy Moondust.
After a long hiatus, Biff Starling and Sandy Moondust return to the air. You'll also hear from Mars Exploration Rover Entry, Descent and Landing Chief Engineer Wayne Lee, and from two more of the Student Astronauts.
Opportunity is on a roll and Spirit is almost back to full health as we visit with the young Flight Director for the mission. We also hear from two more of the Student Astronauts.
Follow the incredibly exciting and finally triumphant arrival on Mars of the Mars Exploration Rover as it happened at Wild About Mars, the Planetary Society's big weekend event at the Pasadena Convention Center.