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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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Voyager 1 at the Edge of the Solar System, With Ed Stone
Talking With Mary Roach, Author of Packing for Mars
JPL engineer Daniel Gaines helped develop new software for Opportunity to autonomously select objects for close-up imaging as she races across Mars. Emily Lakdawalla is thrilled by evidence of recently active volcanos on Venus. Bill Nye salutes three decades of service by retiring Planetary Society founder Lou Friedman.
John Callas tells us why an end to Spirit's roving does not mean the end of her work on the red planet. Emily Lakdawalla looks to the other side of Mars where Opportunity is rolling up to a baby crater, and Bill Nye is head over heels for the highest ever skydive.
John Callas reports on Spirit and Opportunity, Bill Nye debates the future of humans on the Moon, and Bruce Betts looks to the Perseid meteor shower in his What's Up review of the night sky.
Bruce Banerdt provides a status report on Spirit and Opportunity. Bill Nye has something old and something new to talk about, and Bruce Betts returns from the Planetary Defense Conference in Spain with news of Near Earth Objects and other things in the night sky.
A Conversation with Elon Musk of SpaceX
Jim Bell and Bill Nye talk Spirit and Opportunity in celebration of 5 years on Mars. Emily Lakdawalla's Q&A looks forward to a Mars flyby by the Dawn spacecraft.
Longtime partner Ann Druyan is proud of NASA's new Carl Sagan Fellowships. Bill Nye has a tribute for his old professor.
JPL's Rob Manning explores just a few of the challenges of landing a spacecraft on another planet. We also get a Phoenix mission update from Emily Lakdawalla, who says not everything is going well.
Steve Squyres gives us a status report on Spirit and Opportunity, and Bill Nye comments on the rings that appear to surround one of Saturn's small moons. Last week Emily Lakdawalla told us why objects in space are round, but this time her Q&A explains why they're not.
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.
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.
Cosmos 1: Solar Sail Special Report
Solar Sail Countdown
A Conversation with Sally Ride
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.
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.