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Planetary Radio Episodes

For every week 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. We also showcase regular features that raise your space IQ while they put a smile on your face.

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Alan Stern and a Triumph at Pluto

October 25, 2016 • 38:02

Alan Stern of the New Horizons mission to Pluto and beyond was in Pasadena for the annual meeting of the American Astronomical Society’s Division for Planetary Sciences. He joined Mat Kaplan for a very special conversation down the street at Planetary Society HQ.

2015: A Great Year for Space Exploration

December 29, 2015 • 28:50

Our year-end review features the “best of 2015” lists from Jason Davis, Casey Dreier, Emily Lakdawalla and Bill Nye the Science Guy. What’s Up offers planets, a comet, and a nice prize package for the space trivia contest.

Solar System Revelations, and the World’s Biggest Telescope Threatened?

November 17, 2015 • 28:50

Emily Lakdawalla returns from the annual Division for Planetary Sciences meeting with big news from around the solar system. Then we talk with science journalist Traci Watson about the departure of the great Arecibo radio telescope’s Director and the funding challenge that could shut down the observatory.

Pluto Amazes!

October 20, 2015 • 38:40

Hal Weaver is a very happy Project Scientist. His New Horizons spacecraft has shocked his fellow researchers with magnificent images and data. He shares the excitement this week.

Imaging Hot Young Jupiters

October 06, 2015 • 28:50

Franck Marchis is on the team that has delivered an actual image of a young, hot world about 100 light years from Earth. We talk with him on the 20th anniversary of the first exoplanet discovery.

The Royal Observatory, Greenwich and the Quest for Longitude

July 28, 2015 • 43:09

Come with us on a visit to the home of the prime meridian for a conversation with the curator of the Royal Observatory, Greenwich about the race to create a practical means for determining longitude.

Planetary Radio Live at the New Horizons Pluto Encounter

July 21, 2015 • 28:50

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

July 14, 2015 • 28:50

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

July 07, 2015 • 28:50

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.

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

May 19, 2015 • 33:59

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

May 12, 2015 • 28:50

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

May 05, 2015 • 28:50

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

January 06, 2015 • 28:50

The Planetary Society’s experts look forward to a great year of firsts in the solar system and beyond.

Orion Launches Into History

December 09, 2014 • 28:50

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.

The Search for Extraterrestrial Polluters?

August 12, 2014 • 28:50

Harvard’s Henry Lin led work that determined the soon-to-be-launched James Webb Space Telescope may be able to detect an alien civilization by analyzing its atmosphere.

A 2014 Preview From Emily Lakdawalla

January 06, 2014 • 28:50

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

October 07, 2013 • 28:50

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.

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