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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Exploring solar eclipses through time

Ed Krupp, the director of Griffith Observatory in Los Angeles, shares insights from the fascinating field of archaeoastronomy.

Space Policy Edition: Space isn’t black — it’s grey

Space policy expert Laura Delgado López joins the show to break down the new paper, “Clearing the Fog: The Grey Zones of Space Governance” by Jessica West and Jordan Miller.

The 20th landing anniversary of Spirit and Opportunity

Matt Golombek, project scientist for the Mars Exploration Rover Project, joins Planetary Radio to celebrate the 20th anniversary of the landing of the Spirit and Opportunity rovers on Mars.

Blazing a trail to the Moon

We're celebrating lunar missions and the space advocacy that helps make them happen this week on Planetary Radio.

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.

Looking back on 2023

Members of The Planetary Society staff revisit some of 2023's most exhilarating moments and groundbreaking discoveries in space this week on Planetary Radio.

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.

Lucy's first asteroid flyby reveals a surprise moon

Hal Levison and Simone Marchi, the principal and deputy principal investigators for NASA’s Lucy mission, join Planetary Radio to discuss the spacecraft’s first asteroid flyby.

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.

NASA’s STEM program looks to the Moon

Steven Smith, an Education Specialist from NASA's Science, Technology, Engineering, and Mathematics (or STEM) Program, joins Planetary Radio to share some of the unique opportunities available for students in the lead-up to humanity's return to the Moon.

Psyche and Eclipse Company blast off

Jesse Tomlinson and Stephen Watkins from The Eclipse Company join Planetary Radio to talk about their partnership with The Planetary Society and the launch of their new eclipse map for the upcoming 2024 total solar eclipse in North America.

Simulating Psyche: Modeling craters on a metallic world

Simone Marchi, co-investigator for NASA’s Psyche mission, joins Planetary Radio to share the creative ways their mission team is working to understand cratering on metallic worlds.

InSight's revelation on Mars’ rotation

The InSight RISE instrument's principal investigator, Sebastien Le Maistre, from the Royal Observatory of Belgium, joins Planetary Radio to discuss Mars' increased rotation speed.

Celebrating the OSIRIS-REx sample return

We celebrate NASA’s OSIRIS-REx mission’s successful return of samples from asteroid Bennu to Earth on this week’s episode of Planetary Radio.

2023 NASA Innovative Advance Concepts Symposium: Part 2

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 two of two.

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.

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.

Io and Voyager 2: Lost oceans and found signals

Voyager project manager Suzanne Dodd and Voyager project scientist Linda Spilker discuss reestablishing contact with Voyager 2 and Carver Bierson from Arizona State University tells the tale of how Io went from a water-rich moon into a world with lakes of lava.

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