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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PLANETARY RADIO LIVE: Celebrating Rover Curiosity

The leaders of the Curiosity mission join Bill Nye, Emily Lakdawalla and host Mat Kaplan for a live conversation about the thrilling mission on Mars.

Approaching Pluto, and Learning About Uwingu From Alan Stern

New Horizons Principal Investigator Alan Stern returns with a Pluto mission update. He also introduces us to Uwingu.

Celebrating Carl Sagan With Lou Friedman, Lynda Obst, Kip Thorne and More

November 9 was Planetary Society founder Carl Sagan's birthday, so we gathered a few of his close friends and several young scientists he inspired in front of a live audience. They also helped us celebrate Planetary Radio's 10th anniversary!

Curiosity Sniffs Martian Air/Shuttle Endeavour Opens to the World

Scientists have revealed the first data gathered by Curiosity, the Mars Science Laboratory Rover, about the Martian atmosphere, while Space Shuttle Endeavour has opened to the public.

Curiosity Finds a Martian Stream Bed and Endeavour Flies Home

Emily Lakdawalla reports on Curiosity's discovery of an ancient stream bed, and Endeavour flies over the California plant where it was built.

Remembering Neil Armstrong/ChemCam is Zapping Martian Rocks!

Emily Lakdawalla and Bill Nye the Science Guy join Mat Kaplan for a special remembrance of Neil Armstrong. Then we visit with the principal investigator for the first ray gun on Mars. Roger Wiens leads the ChemCam team that is using its powerful laser to zap and analyze Martian rocks. It’s just one of the Curiosity Rover success stories. Win a ChemCam bumper sticker and a Planetary Radio t-shirt in the weekly What’s Up space trivia contest!

More From Planetfest With Andrew Chaikin and Scott Hubbard

Our Planetary Radio Live celebration of Mars rover Curiosity at Planetfest continues with more from space historian Andrew Chaikin, former NASA Mars czar Scott Hubbard and Planetary Society CEO Bill Nye the Science Guy. Emily breaks the news about NASA’s choice for a Discovery mission, and Bruce Betts joins Mat Kaplan for a What’s Up look at the night sky and a new space trivia contest.

Planetary Radio LIVE! With John Callas of the Mars Exploration Rovers and Joy Crisp of the Mars Science Laboratory

We once again go before a live audience for an all Mars rover show. We've also got singer KJ Williams, Bill Nye the Planetary Guy, and Emily Lakdawalla's proof that she is not covering up evidence of aliens in our solar system!

Opportunity Reaches Endeavour, and Planetary Radio Wins an Award!

Opportunity reaches Endeavour Crater, Emily Lakdawalla visits a New Horizons science meeting about Pluto, Bill Nye discusses a planet made of diamond, and Bruce Betts and Mat Kaplan celebrate the award of a Parsec award to Planetary Radio.

It's Mars Rover Opportunity, Only Smarter

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.

Mars Rover Project Manager John Callas

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.

Mars Exploration Rover Project Manager John Callas

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.

A Mars Exploration Rover Update with Project Scientist Bruce Banerdt

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.

Celebrate the Mars Rovers With Jim Bell

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.

A Mars Rover Update From Steve Squyres

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.

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