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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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Kathryn Sullivan, Space Dentistry and More at the International Space Development Conference

June 20, 2018 • 45:51

Freeman Dyson wasn’t the only space star at the ISDC. Mat talks with former astronaut and NOAA Administrator Kathryn Sullivan, leaders of the Cassini mission, innovative students and an expert on dental care in space.

Celebrating Cassini…Live!

September 27, 2017 • 1:28:48

More than 1,100 fans of the just-completed 20-year mission to Saturn joined us for a live tribute.

Long Live Cassini!

September 20, 2017 • 1:00:02

Join us at JPL and Caltech on the bittersweet morning the Cassini spacecraft plunged into Saturn.

Science Fiction Greats on Humanity’s Destiny in Space

September 13, 2017 • 1:10:39

Robert Zubrin of the Mars Society talks with Gregory Benford, David Brin, Geoffrey Landis and Larry Niven about terraforming Mars, the origin of life, the drive to explore and more.

Space Policy Edition #16: NASA's Flagship Missions: Are They Worth It?

September 01, 2017 • 1:26:01

The multi-billion dollar, multi-decade Cassini mission is about to end. A new report tries to answer an important question: are flagship science missions like Cassini worth the effort and expense? And how can NASA maximize the value of these endeavours? Dr. Ralph McNutt, co-chair of the National Academies study, reviews the report’s recommendations.

Cassini Project Scientist Linda Spilker’s Last Appearance Before the Grand Finale

August 23, 2017 • 35:08

It’s the Grandest Finale. The spectacular Cassini mission’s exploration of Saturn will end on September 15th when the spacecraft plunges into the planet. Cassini Project Scientist Linda Spilker is back with one last mission update.

An Eye on the Sun (In the Middle of a Lake)

August 02, 2017 • 52:28

The world’s most powerful solar telescope has just been renamed for the man responsible for its creation. We’ll meet astrophysicist and helioseismologist Phil Goode, and we’ll enjoy a tour of the Goode Solar Telescope.

Emily Lakdawalla on the Last Orbits of Cassini

July 19, 2017 • 28:50

The Cassini Mission has less than two months to go before it ends with a spectacular plunge into the beautiful ringed world. Planetary Society Senior Editor Emily Lakdawalla has prepared a guide to the last orbits by the historic spacecraft.

Julie Webster and the Art of Spacecraft Endurance

June 14, 2017 • 47:53

How do you keep a dazzlingly complex spacecraft in good health after 20 years in space? That’s the challenge for Julie Webster and her team of engineers supporting the Cassini mission at Saturn.

Human Spaceflight: Coming Back to America

May 24, 2017 • 47:39

Astronauts may soon ride on US rockets and in US spaceships for the first time since the last Space Shuttle flight. Jon Cowart of NASA is working with SpaceX toward the first launch of a Dragon spacecraft with humans on board.

Visiting Worlds Fantastic with Bonnie Buratti

May 10, 2017 • 56:09

Veteran Jet Propulsion Lab planetary scientist Bonnie Buratti talks with Mat about the wonder of our solar neighborhood that she explores in "Worlds Fantastic, Worlds Familiar—A Guided Tour of the Solar System."

Be There! The Great American Eclipse

May 03, 2017 • 53:59

Our ongoing coverage of preparation for the Great American Eclipse takes us to Southern Illinois University Carbondale where a huge celebration is planned.

Bill Nye Saves the World…With Space

April 26, 2017 • 34:53

It was a big week for the Science Guy, and for science. Bill Nye served as honorary co-chair of the March for Science in Washington DC. His new Netflix series, Bill Nye Saves the World, premiered the next day. Two of the show’s thirteen episodes are devoted to space science and exploration. Bill talks about all this in a special conversation with Mat Kaplan.

The Final Countdown at Saturn

January 31, 2017 • 46:17

Planetary Radio’s most frequent guest, Project Scientist Linda Spilker, returns with another update on the Cassini mission that is approaching its grand finale.

A Little Rocket Company Shoots for the Moon

January 03, 2017 • 57:33

CEO Randa Milliron introduces us to Interorbital Systems, which wants to put your payload in orbit for as little as $8,000. Can they do it?

Inside Virgin Galactic’s SpaceShipTwo

November 08, 2016 • 45:42

Host Mat Kaplan traveled to California’s Mojave Desert for a tour of Virgin Galactic’s The Spaceship Company, where the second SpaceShipTwo was built and is undergoing flight tests. TSC Executive VP Enrico Palermo was his guide.

Sailing the Canyons of Titan

August 16, 2016 • 38:39

Steep canyons on Saturn's moon Titan are filled with liquid methane. That's the discovery just announced by an international team of Cassini scientists, including Alex Hayes.

Celebrating Yuri’s Night 2016 with Astronaut Samantha Cristoforetti

April 12, 2016 • 28:50

Happy Yuri’s Night! We’re partying under Space Shuttle Endeavour in the first of two shows featuring interviews from the worldwide celebration of space. Star Trek’s Robert Picardo will talk about his new video newsletter, the Planetary Post, and we’ll visit with Samantha Cristoforetti, who returned last June from 200 days aboard the International Space Station.

Planetary Radio Live: All These Worlds…

March 22, 2016 • 28:50

Our live conversation about “Planet 9” and the amazing diversity of our solar system, featuring Konstantin Batygin and Mike Brown of Caltech, Senior Editor Emily Lakdawalla, Bill Nye the Science Guy and Cassini Project Scientist Linda Spilker.

Exploring Saturn With Cassini

February 23, 2016 • 32:24

Cassini Mission Project Scientist Linda Spilker returns with the latest discoveries at the beautiful ringed planet, its moons and its rings.

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