Planetary Radio Episodes

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.

The Nancy Grace Roman Space Telescope is ready to launch

The Nancy Grace Roman Space Telescope is preparing to launch, promising to transform our understanding of dark energy and exoplanets. We talk with Julie McEnery, senior project scientist for Roman at NASA Goddard, and Jason Rhodes, project scientist for Roman at JPL, about what's ahead.

Book Club Edition: Becoming Martian by Scott Solomon

How will living in space change our bodies and minds? That’s the sub-title of Scott Solomon’s great new book, “Becoming Martian”, and it’s the question he takes up this month on the book club edition of Planetary Radio.

The SpaceX Falcon 9 that crashed into the Moon

Jared Head, museum facilitator at Columbia Memorial Space Center and co-host of All Space Considered at Griffith Observatory, breaks down how a SpaceX Falcon 9 upper stage ended up crashing into the Moon. Plus, Planetary Society staff reflect on the 2026 total solar eclipse in Spain and share an update on the fight to save NASA science.

Total solar eclipse 2026: Astrophotography and birdsong

Astrophotographer Andrew McCarthy and bioacoustics researcher David Mann, join Planetary Radio to talk about the August 12th total solar eclipse and how birds responded to totality.

LHS 1140b: The first atmosphere detected on a rocky habitable-zone exoplanet

Collin Cherubim, NASA Hubble Fellow at the University of Chicago, discusses his team's detection of an atmosphere on LHS 1140b, the first rocky exoplanet in a star's habitable zone confirmed to have one.

TERP RAPTOR: A student-built mission to asteroid Apophis

A team of University of Maryland students is building a CubeSat to fly past asteroid Apophis during its historic close approach to Earth in 2029. Four members of the TERP RAPTOR team join us to share how they're turning a classroom project into a real space mission.

Hot Jupiters: The ‘Roasted Planet’ and the wrong-way hotspot

Research Scientist Tiffany Kataria of NASA JPL and Assistant Professor Lisa Dang of the University of Waterloo talk about two extreme hot Jupiters from the American Astronomical Society meeting.

Book Club Edition: “The Edge of Space-Time” by Chanda Prescod-Weinstein

Theoretical physicist Chanda Prescod-Weinstein visits the club for a mind-bending conversation about her brilliant, deeply personal exploration of the Cosmos.

Sian Proctor and John Read on teaching babies to love the Cosmos

Commercial space astronaut Sian Proctor and astronomer John Read join Planetary Radio to discuss “Baby's Guide to the Night Sky,” their new book introducing the youngest children to constellations and the wonders of the Cosmos.

Small Town Universe: Inside Green Bank's Radio Quiet Zone

Green Bank, West Virginia, bans cell phones and Wi-Fi, so that its giant radio telescope can listen undisturbed. This week, Senior Communications Advisor Mat Kaplan talks with director Katie Dellamaggiore and physicist Ellie White about the documentary "Small Town Universe," and Public Education Specialist Kate Howells previews August's total solar eclipse.

Rosalind Franklin and the search for life on Mars

The European Space Agency's Rosalind Franklin rover finally has a path to Mars. ExoMars Project Scientist Jorge Vago joins Planetary Radio to discuss the rover's 2-meter drill, its onboard astrobiology lab, and what it would mean to finally find evidence that Mars was once home to life.

Tianwen-2: China closes in on Kamoʻoalewa

China’s Tianwen-2 mission has arrived at the quasi-moon Kamoʻoalewa. We sit down with Planetary Society contributing editor and freelance space journalist Andrew Jones to explore what this ambitious sample-return mission could reveal about our Solar System's history.

Book Club Edition: “To Be Taught, If Fortunate” with Becky Chambers

Hugo and Locus-winning author Becky Chambers talks with Mat Kaplan about “To Be Taught, If Fortunate,” her outstanding novella. It’s a passionate plea for space science and exploration told across the interstellar journey of four equally passionate human voyagers.

Flying on Titan: The engineering of Dragonfly

NASA's Dragonfly mission is sending a car-sized, nuclear-powered rotorcraft to Saturn's moon Titan. Lead rotor engineer Felipe Ruiz and principal investigator Zibi Turtle from Johns Hopkins Applied Physics Laboratory join us to discuss the engineering of flight on Titan with just two years to launch.

Twenty organic molecules found in an ancient Martian rock

Amy Williams, astrobiologist and associate professor at the University of Florida, discusses a landmark experiment that revealed more than 20 organic molecules preserved in ancient Martian rock. We explore what this chemical discovery tells us about Mars' ancient habitability.

Book Club Edition: Diane Ackerman and “The Planets: A Cosmic Pastoral”

Celebrated author and poet Diane Ackerman joins us for a lively conversation about the new edition of her wonderful collection. Carl Sagan described it as spectacularly good poetry.

Artemis II’s AVATAR and a sungrazing comet

Lisa Carnell, Director of NASA's Biological and Physical Sciences Division, explains AVATAR, the experiment flying organ chips grown from astronaut cells on Artemis II. Then, asteroid hunter Alain Maury tells the story of discovering a sungrazing comet that could become one of the most spectacular in decades.

The astronaut health experiments of Artemis II

Steve Platts, chief scientist of NASA’s Human Research Program walks us through the health experiments aboard Artemis II, followed by Planetary Society Chief of Space Policy Casey Dreier on NASA's Ignition Day announcements.

The 18th European Space Conference: Dreaming of European boots on the Moon

As humanity heads back to the Moon, Europe is stepping up. We bring you voices from the European Space Conference and take you inside the Moonlight Initiative panel building the Moon’s future.

Starman: Looking back on a life exploring the Solar System

Gentry Lee, the subject of the new documentary “Starman,” reflects on nearly five decades at JPL, the missions that defined the Space Age, and the search for life beyond Earth.

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