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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OSIRIS-REx becomes APEX

Scott Guzewich, deputy project scientist for NASA’s OSIRIS-APEX mission, joins Planetary Radio to discuss the next steps for the mission as we count down to asteroid Apophis’ flyby of Earth in 2029.

The Space Race: Honoring the first African-American space explorers

This week on Planetary Radio, we take a peek behind the scenes at National Geographic's new documentary, “The Space Race,” which celebrates the triumphs and struggles of the first African-American space pioneers and astronauts.

JWST finds a new lead in the search for life on a mysterious exoplanet

Knicole Colón, the deputy project scientist for exoplanet science for JWST, joins Planetary Radio to discuss the detection of methane and carbon dioxide in the atmosphere of K2-18 b.

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.

Deep Sky: A JWST IMAX experience

Nathaniel Kahn, an Oscar-nominated filmmaker and the director of Deep Sky, joins Planetary Radio this week to discuss the film's decade-long creation process and the magic of JWST images on the big screen.

Alone but not lonely with Louis Friedman

Louis Friedman, one of the three co-founders of The Planetary Society, joins Planetary Radio to discuss his new book, Alone but Not Lonely: Exploring for Extraterrestrial Life.

Mars Life Explorer: The search for extant life on the red planet

Amy Williams, assistant professor of geology at the University of Florida, joins Planetary Radio to discuss the proposed Mars Life Explorer mission and the search for extant life on Mars.

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.

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.

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.

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.

Are we alone? The search for alien technosignatures

A new volunteer SETI science project to search for alien technosignatures has launched! Two of its creators tell you how to sign up.

Celebrating NASA’s Artemis I mission to the Moon

Jeremy Graeber, the assistant launch director at Kennedy Space Center in Florida, joins Planetary Radio to recount his experience on the night of Artemis I’s historic launch.

Space Policy Edition: JPL Director wants "every brain" to have the chance to work in space exploration

Jet Propulsion Laboratory Director Laurie Leshin wants to give every brain in the country the opportunity to work in space exploration.

Scientist and Hubble Repairman John Grunsfeld

Astrophysicist, former astronaut and NASA associate administrator John Grunsfeld on human exploration of space and the science we will do there.

DART smacked an asteroid! So what’s next in planetary defense?

The Double Asteroid Redirection Test was a brilliant success. The leaders of NASA’s Planetary Defense Coordination Office tell us what’s next in the quest to protect Earth.

Eyes on the Sky: Spacewatch and the Catalina Sky Survey

Meet leaders of two of the most successful Earth-based searches for asteroids, including many that could threaten Earth.

Innovate! NASA’s leading-edge fellows share their amazing projects

Join us at the 2022 NASA Innovative Advanced Concepts (NIAC) Symposium for a taste of projects that just might change the world.

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