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 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.

A Small, Distant World: Kepler 138b

SETI Institute scientist Jason Rowe returns to tell us about the smallest exoplanet so far that has had its size and mass determined. Jason also talks with Mat about our ever-expanding knowledge of these worlds that circle faraway stars.

Emily Lakdawalla’s Pluto Preview

Two visits with the Planetary Society Senior Editor this week, as Emily first provides an update on the Rosetta comet mission and then returns with an extended look ahead at the New Horizons Pluto encounter next week.

LightSail Triumphant! A Mission Press Conference

After a roller coaster ride that included a maddening eight-day silence, the LightSail test mission finally achieved all of its major goals. Leaders of the mission team gathered on June 10th to take questions from the media, and share their thoughts and emotions with the general public. Today’s show presents highlights of that briefing. Emily Lakdawalla is seeing things on Pluto, and she’s not alone. Bruce Betts takes Mat Kaplan on a walk in space during this week’s What’s Up segment.

Spiraling Closer to Ceres With the Dawn Mission’s Marc Rayman

It’s the biggest dwarf planet between here and Pluto, and it has a new permanent resident. The Dawn spacecraft is orbiting Ceres in the asteroid belt, revealing it as never before. What are those bright spots anyway? We spend time with Dawn’s Chief Engineer and Director, Marc Rayman.

Alan Stern and the Rise of Pluto

Humankind’s arrival at Pluto is barely two months away. The science and images have already started to flow from New Horizons, according to the mission’s Principal Investigator, Alan Stern. Alan returns to Planetary Radio this week.

Sean Solomon on the Climactic End of the MESSENGER Mission to Mercury

We open with the countdown to destruction—the MESSENGER spacecraft’s impact on Mercury ended its spectacularly successful mission. Principal Investigator Sean Solomon joins us immediately after this big finish.

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.

Orion Launches Into History

NASA’s Orion spacecraft has taken its first step toward Mars and an asteroid mission. The Planetary Society’s Jason Davis was at the Kennedy Space Center for the December 5 mission.

Ancient Water Was Here Before the Sun

Ilse Cleeves is lead author of a paper that concludes up to half of our solar system’s water is older than the solar system itself. The implications for life across the galaxy are profound.

Alan Stern and a Big Milestone on the Way to Pluto

New Horizons passed through the orbit of Neptune on August 25th. By cosmic coincidence, this was the 25th anniversary of Voyager 2’s flyby of that big, blue world. We catch Principal Investigator Alan Stern right after a celebration in Washington.

Emily Lakdawalla At Her Favorite Conference While Alan Stern Stirs Up the Solar System

Emily shares highlights from last week’s Lunar and Planetary Science Conference, and Alan Stern provides updates on the Rosetta comet mission and his New Horizons probe that is nearing Pluto, and addresses the controversy around Uwingu’s Name a Martian Crater project.

A 2014 Preview From Emily Lakdawalla

24 spacecraft are either busy exploring the solar system or speeding toward an exciting destination. The Planetary Society's Senior Editor takes us on a whirlwind advance tour.

The New Horizons Initiative

Carl Sagan’s longtime artistic collaborator, Jon Lomberg, designed the cover for the Voyager Interstellar Record. Now he wants to upload another message from Earth to New Horizons, the spacecraft on its way to Pluto.

Europa Report--New Science Fiction Film Embraces the Science

If you’re willing to accept the premise, the thrilling new independent feature film presents one of the most scientifically and technically accurate tales ever put on screen. We’ll talk with the director and producer, and then ask science advisor Kevin Hand for a reality check.

Alan Stern's Golden Spike Sets Sights on the Moon

Alan Stern is back to tell us about Golden Spike, his new company that plans to put human clients on the surface of the moon by the end of this decade.

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.

Amazing Science at the 2012 DPS Meeting

The 44th Annual Meeting of the AAS Division of Planetary Sciences hosted hundreds of researchers and revealed volumes of scientific results. Join us at the conference.

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.

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