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.

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.

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.

U.S. space science in flux: Grant rules, rockets, and reorganization

Jack Kiraly, The Planetary Society's director of government relations, joins Sarah Al-Ahmed to discuss proposed grant rule changes that could upend U.S. science funding, a major NASA reorganization, and the fallout from the destruction of Blue Origin's New Glenn rocket.

Spacewoman with Eileen Collins

Colonel Eileen Collins, the first woman to pilot and command a Space Shuttle, joins us to discuss “Spacewoman,” the new documentary telling the story of her extraordinary life and career.

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.

Igniting Discovery: A showcase of NASA-funded research

For the first time, the Planetary Society's annual Day of Action was followed by Igniting Discovery, a showcase of the NASA-funded science we're fighting to protect, held in the U.S. Senate building.

Book Club Edition: Founder and CEO Peter Beck on The Launch of Rocket Lab

Sir Peter Beck adds to the story told about his hugely successful and innovative company in “The Launch of Rocket Lab,” a beautifully illustrated, monumental book.

Space Policy Edition: Return to Launch — Cape Canaveral's unlikely history

Casey Dreier, chief of space policy at The Planetary Society, sits down with Stephen C. Smith, author of Return to Launch and Kennedy Space Center Visitor Complex communicator, to explore how a remote Florida peninsula became the heart of U.S. spaceflight.

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.

Space Policy Edition: Is there really a space race between the US and China?

Casey Dreier, chief of space policy at The Planetary Society, speaks with former NASA strategic advisor on China, Patrick Besha, about China’s long-term space strategy and what real competition in space may look like in the decades ahead.

Book Club Edition: Planetary Society Chief Scientist Bruce Betts’ latest for kids

Bruce Betts helps us explore the latest and last in his excellent library of space books for young people. He and host Mat Kaplan take up “Are We Alone?” and “The Size of Space.”

Book Club Edition: The Little Book of Aliens by Adam Frank

The delightful astrophysicist and science communicator Adam Frank shares his thoughts about the search for life and intelligence across the Universe in the Planetary Society’s member book club.

ESCAPADE begins its journey to Mars

NASA’s ESCAPADE mission is on its way to Mars to study how the solar wind interacts with the planet’s magnetic fields and atmosphere. This week, we talk with Ari Koeppel and PI Rob Lillis about the mission’s launch and science goals, and examine Martian aurora in What’s Up.

Smart Girl Dumb Questions: Casey Dreier answers why space is worth it

Planetary Radio shares Casey Dreier’s appearance on Smart Girl Dumb Questions, where he and host Nayeema Raza explore why space exploration matters and whether NASA’s budget is worth the cost.

Book Club Edition: The Martians by David Baron

Author David Baron has written the definitive, true story of a time when nearly everyone in America was utterly convinced there was a supremely intelligent civilization on the Red Planet, and they wanted to talk with us!

Epic Spaceman: Making cosmic scale human

This week, Planetary Radio explores how Epic Spaceman uses visual effects and everyday metaphors to make the vast scale of the Universe feel human and understandable.

Space Policy Edition: Should a (potential) biosignature revive Mars Sample Return?

In 1996, a controversial claim of fossilized life in a Martian meteorite ignited a golden age of Mars exploration. Nearly 30 years later, a potential biosignature detected by the Perseverance rover at Jezero Crater has sparked… no major policy changes. Why? Lou Friedman joins the show to present his view.

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