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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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Kepler Discovers Hundreds of Extrasolar Planets!
Tasting a Super-Earth's Atmosphere
Talking With Mary Roach, Author of Packing for Mars
Kepler Discovers Hundreds of Exoplanets
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.
100 Millions Solar Systems Like Our Own?
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.
William Borucki on Kepler's Search for Another Earth
Judging a Planet's Habitability With Abel Mendez
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.
Kepler Begins Search for Other Earths
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.
Exoplanet Finder Debra Fischer
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.
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.
Billions and Billions of Earthlike Planets?
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.
Analyzing Alien Atmospheres
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.