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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The disappearing act of Saturn's young rings

Richard Durisen and Paul Estrada join Planetary Radio to discuss their research on the surprisingly recent formation of Saturn's rings and why they are disappearing over time.

The oldest organic molecules in the known Universe

Justin Spilker joins Planetary Radio to talk about his team’s detection of the oldest organic molecules in the known Universe.

Starstruck with Sarafina El-Badry Nance

Sarafina El-Badry Nance joins Planetary Radio to discuss her new book, Starstruck: A Memoir of Astrophysics and Finding Light in the Dark.

Space Policy Edition: The policy implications of active SETI

Would meeting an extraterrestrial civilization be good or bad for humanity? Astronomer Dr. Jacob Haqq Misra argues that knowing the outcome in advance is fundamentally impossible.

The Science You’ve Enabled

The second round awardees in a Planetary Society grant program will explore extreme life in super-salty lakes, and study how future Martians will grow their own food.

Exoplanet enigma: Unpacking the discovery of a "forbidden" planet

Shubham Kanodia, the lead on a paper about a so-called forbidden planet, TOI 5202 b, joins us to talk about this strange world and why it's upending our understanding of planetary formation.

Inspiring the next generation through space education

In this week's episode of Planetary Radio, we're honoring the educators who inspire young, curious minds to explore the marvels of the Cosmos.

The case for saving VERITAS

Darby Dyar, Deputy Principal Investigator for NASA's VERITAS mission to Venus, joins Planetary Radio to share the human story behind the spacecraft and make a case for saving the mission.

Space Policy Edition: SpaceX's Starship vs. the environment, with Eric Roesch

Eric Roesch, an environmental policy expert, joins Planetary Radio to discuss SpaceX's Starship, environmental regulations' role in commercial space travel, and responsible space exploration.

Adventures at the 2023 Planetary Defense Conference

Planetary Radio creator Mat Kaplan shares a look behind the scenes at the 2023 Planetary Defense Conference in Vienna, Austria.

Juice mission liftoff: A new era in icy moon exploration begins

Join us as we celebrate the successful launch of the European Space Agency's Juice mission with project scientist Olivier Witasse.

Under Alien Skies with Phil Plait

Phil Plait, the Bad Astronomer, joins Planetary Radio to discuss his new book, Under Alien Skies: A Sightseer’s Guide to the Galaxy.

Yuri’s Night: For all SpaceKind

Join us as we delve into the heart of LA's 2023 Yuri's Night party, a celebration commemorating Yuri Gagarin's pioneering 1961 voyage into space.

Space Policy Edition: The motives behind NASA's billions — Jean Toal Eisen on how Congress funds the final frontier

Jean Toal Eisen, former senior staff on the Senate Appropriations Committee, joins the show to reveal the decision-making process, priorities, and motivations of those who control the U.S. space program's funding.

Two Years of Hope: Celebrating the Emirates Mars Mission

Join us as we celebrate the accomplishments of a truly inspiring space mission - the United Arab Emirates' Hope probe, which has spent two amazing years orbiting Mars!

Volcanic Venus? New insights from vintage data

Robbie Herrick and Scott Hensley, the minds behind a new paper on recent potential volcanic activity on Venus, join Planetary Radio to discuss their discovery and what it means for the future of Venusian exploration.

Getting psyched for Psyche

Lindy Elkins-Tanton, the principal investigator for NASA’s Psyche mission to explore a metallic asteroid, joins Planetary Radio to share the mission’s status and look forward to the wonders that await when the spacecraft reaches its target.

Universal Harmonies: Sonifying images for science and accessibility

Kim Arcand from NASA’s Chandra X-ray Observatory joins Planetary Radio to share her team’s new album Universal Harmonies.

Looking back on Voyager’s 45th Anniversary

Planetary Radio’s creator Mat Kaplan guest hosts for this look back at the Jet Propulsion Lab’s celebration of the 45th anniversary of the Voyager mission.

Space Policy Edition: The Tricky Ethics of Space Settlement

Dr. Erika Nesvold, astrophysicist and author of the new book Off-Earth: Ethical Questions and Quandaries for Living in Outer Space explores the ethical challenges facing our species as it dips its toe into living beyond our home planet.

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