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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What’s hidden inside planets?

Sabine Stanley, author of the new book "What's Hidden Inside Planets?", discusses some of the amazing things that lie under the surfaces of the worlds in our Solar System.

Revisiting the discovery of phosphorus on Enceladus

Chris Glein, a lead scientist at the Southwest Research Institute, joins Planetary Radio to talk about the discovery of phosphorus in the oceans of Saturn’s moon Enceladus and the implications for the search for life.

Dragonfly soars to final design phase

NASA's Dragonfly mission to Saturn's moon Titan has been authorized to proceed with work on final mission design and fabrication. This week on Planetary Radio, we get an update on the mission's progress and new timeline.

An astrogeologic experience with Kirby Runyon

Mat Kaplan, Planetary Radio's creator and former host, takes us on an adventure with planetary geologist Kirby Runyon as they tour New Mexico, U.S.'s varied geology and compare it to other worlds.

2023 NASA Innovative Advance Concepts Symposium: Part 1

Join Planetary Radio host Sarah Al-Ahmed on a trip to the 2023 NASA Innovative Advanced Concepts (NIAC) Symposium in Houston, Texas. This episode is part one of two.

An essential ingredient for life in the oceans of Enceladus

Chris Glein, a lead scientist at the Southwest Research Institute, joins Planetary Radio to talk about the discovery of phosphorus in the oceans of Saturn’s moon Enceladus and the implications for the search for life.

Comparing the rivers of Earth, Mars, and Titan

Sam Birch, an assistant professor at Brown University, explores what we know about the alluvial rivers of Earth, Mars, and Saturn's moon Titan.

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.

Cassini’s Dramatic End: A Planetary Radio Reprise

We were there when the Cassini spacecraft ended 13 years of exploration and revelation at Saturn.

Life, the Universe and Britney Schmidt

Britney Schmidt is preparing us for the day when a submarine will slip into the seas of an ocean world like Europa to search for life.

Yuri’s Night: Join the party!

Thousands celebrated the 61st anniversary of the first human voyage into space. We’ll take you to the Los Angeles party under the Space Shuttle Endeavour.

Astrobiologist David Grinspoon on life, the universe and everything

Astrobiologist and author David Grinspoon shares his thoughts about the search for life, where we might find it and how science works.

Worlds of snow and ice

New research shows that the giant plumes of Saturn’s moon Enceladus may not be coming from the warm ocean deep below the icy surface.

The Case for a Return to Enceladus

Flying a spacecraft through geysers spewing from Saturn’s moon Enceladus might reveal the building blocks of life or even life itself.

Cassini, Voyager and beyond with Linda Spilker

Cassini mission project scientist Linda Spilker returns with new science from ocean moon Enceladus and anniversaries to celebrate with the Voyager mission.

Finding Life by Looking for Complexity

University of Glasgow chemist Lee Cronin believes he and his collaborators have found a way to recognize life as we know it and as we don’t know it.

A Symphony for 7 Moons

Composer Amanda Lee Falkenberg is joined by Cassini project scientist Linda Spilker and retired astronaut Nicole Stott as she shares excerpts from The Moons Symphony.

Astronaut Stephanie Wilson Might Walk on the Moon

18 astronauts on the Artemis Team have a shot at walking on the Moon, and Stephanie Wilson is one of them.

A Deep Dive into Asteroid Bennu With Dante Lauretta

The leader of the OSIRIS REx asteroid sample return mission shares more details of last week’s encounter in an exclusive interview, while we also learn about the proposed mission to look for life on Saturn’s moon Enceladus.

A Spirited Conversation with Carolyn Porco

A fun conversation with the leader of the Cassini imaging team, and an audio tour of the transit of Mercury with astronomer Jay Pasachoff.

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