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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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Flying the Skies of Saturn’s Moon Titan

January 16, 2019 • 45:47

magine soaring over what may be the solar system’s most Earth-like world, if you ignore the chill. If funded, the nuclear electric-powered Dragonfly will do exactly this. Principal Investigator Elizabeth “Zibi” Turtle shares her enthusiasm.

It’s a Hard Rain on Titan

January 17, 2018 • 43:41

A computer model based on our best data about Saturn’s cloud-shrouded moon says that torrential liquid methane pounds the surface far more frequently than previously expected. Sean Faulk and Jonathan Mitchell of UCLA explain.

Ed Stone and Forty Years of Voyager in Space

August 16, 2017 • 32:00

It is most space fans’ favorite planetary science mission, and with good reason. We visit with the man who has been in charge of Voyager mission science for more than four decades.

Space Policy Edition #14 – Ice Giants and Ocean Worlds Beckon

July 07, 2017 • 1:04:40

A new report builds the case for long overdue returns to Uranus and Neptune, while another proposal calls for exploration of the many bodies in our solar system that hide vast water oceans. Jason Callahan, Casey Dreier and Mat Kaplan dive into the troubled waters that determine which planetary science missions will get the limited funds available.

The Worlds of TRAPPIST-1

March 01, 2017 • 33:56

The discovery of seven, Earth-sized planets in a nearby solar system was announced last week. Astrophysicist and planetary scientist Sara Seager joins us to share her excitement about this find that includes three planets in the habitable zone.

Nazis in Space? Rod Pyle’s Amazing Stories of the Space Age

February 15, 2017 • 52:45

Rod Pyle reveals bizarre yet fascinating space projects of the past in his new book. Pyle also exposes previously classified information about missions and spacecraft you thought you knew.

Rocket Road Trip!

September 27, 2016 • 33:17

Planetary Society Digital Editor Jason Davis returns with the story of the ten-day trek across the South he just completed with two Society colleagues.

Space Policy Edition #3: Plutonium-238, Europa via SLS, Cost of the Next Mars Rover Rises

August 05, 2016 • 1:03:06

In our third episode, we debate the risks and rewards of tying the future of a Europa mission to the fate of NASA's massive Space Launch System rocket. Also, NASA just announced that the next Mars rover will cost $2.4 billion—$900 million more than initially thought. But the mission is not considered over budget. Why not? Lastly, the U.S. just generated 50 grams of Plutonium-238, the largest amount in nearly thirty years. We celebrate the successful effort to create this critically important, though highly toxic, power source for deep space spacecraft.

NASA’s Science Leader John Grunsfeld

May 17, 2016 • 28:50

John Grunsfeld closes our coverage of the Space Foundation’s 32nd annual Space Symposium in Colorado Springs. We also meet the leaders of the New Generation Space Leaders Program.

Exploring Europa and Mining Asteroids at Yuri’s Night

April 19, 2016 • 41:05

Our special coverage from the Los Angeles Yuri’s Night party continues with Chris Lewicki of Planetary Resources along with Bob Pappalardo and Boback “Mohawk Guy” Ferdowsi who are preparing an orbiter for Jupiter’s ocean world Europa.

Planetary Radio Extra: Planetary Society Experts 2015 Review

January 05, 2016 • 61:40

Bruce Betts, Jason Davis, Casey Dreier and Emily Lakdawalla gather with Mat Kaplan for a fascinating and informative Planetary Radio Extra year-in-review roundtable discussion.

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.

Exploring the Seas of Earth and Other Worlds

June 23, 2015 • 28:50

We return to the beautiful Aquarium of the Pacific in southern California for a fascinating conversation about ocean science. What we learn down here is furthering our research around the solar system. William Patzert, Jerry Schubel and Steven Vance join Mat Kaplan on stage. Emily Lakdawalla tells us what Curiosity, the Mars Science Laboratory rover, has been doing lately. Bruce Betts is keeping his eye on converging Jupiter and Venus.

Year of the Icy Worlds

February 10, 2015 • 28:50

We’ll visit the Jet Propulsion Lab on its Icy Worlds Day to learn more about spacecraft exploring Ceres, Enceladus and Europa from leaders of these missions.

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.

A Conversation With Congressman Lamar Smith

September 30, 2014 • 28:50

The Chairman of the powerful Science, Space and Technology Committee in the U.S. House of Representatives joins us for a talk about planetary science, Europa, a human flyby of Mars and much more.

10 Years A Roving: A.J.S. Rayl on the Mars Exploration Rovers

December 23, 2013 • 53:17

What a long, wonderful trip it has been for Spirit and Opportunity, the Mars Exploration Rovers. Planetary Society reporter A.J.S. Rayl has been writing about their adventure every month for ten years. She looks back on this week’s show.

A Big Week for Space Science at the AGU and Beyond

December 16, 2013 • 28:50

The annual fall meeting of the American Geophysical Union revealed lots of science, some of it astounding. Emily Lakdawalla was there with Advocacy and Outreach Coordinator Casey Dreier, whose news was not quite as good.

Alyssa Rhoden and the Rise of the Europa Underground

November 25, 2013 • 30:20

Alyssa Rhoden studies Jupiter’s moon Europa…from a distance. She, many other scientists and millions of space exploration fans around the globe want to see a mission to this ice world that hides a vast, warm ocean. That’s why she and several colleagues have created Destination: Europa, and they want your help.

Europa Report--New Science Fiction Film Embraces the Science

July 29, 2013 • 28:50

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.

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