Planetary Radio: Space Exploration, Astronomy and Science
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Planetary Radio: Space Exploration, Astronomy and Science
Planetary Radio brings you the human adventure across our Solar System and beyond. We visit each week with the scientists, engineers, leaders, advocates, and astronauts who are taking us across the final frontier. Regular features raise your space IQ while they put a smile on your face. Join host Sa...
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Twenty organic molecules found in an ancient Martian rock
NASA's Curiosity rover has been exploring Mars' Gale Crater for over a decade. A new analysis of samples collected there reveals something remarkable:...
Book Club Edition: Diane Ackerman and “The Planets: A Cosmic Pastoral”
Author, poet, and science communicator Diane Ackerman is our guest. Her wonderful collection of poems, with one devoted to each of the worlds in our S...
Igniting Discovery: A showcase of NASA-funded research
The Planetary Society's 2026 Day of Action brought something new this year. For the very first time, the advocacy day was followed by a showcase of NA...
Day of Action 2026: Rejoining the fight to save NASA science
Every year, members of The Planetary Society travel to Washington, D.C., to make their voices heard on Capitol Hill. This year, just days after the Ar...
Space Policy Edition: Why humans matter — The philosophy of Artemis II
When Artemis II returned its crew safely to Earth, millions of people found themselves unexpectedly moved. The mission was a test flight, a proof-of-c...
Yuri's Night 2026: Celebrating 65 years of human spaceflight
On April 12th, 1961, Yuri Gagarin became the first human in space. Sixty-five years later, we celebrated that milestone at Griffith Observatory in Los...
Project Hail Mary hits the big screen
“Project Hail Mary” is finally in theaters, and the science is just as thrilling as the story. This week on Planetary Radio, Sarah Al-Ahmed and senior...
Book Club Edition: Founder and CEO Peter Beck on The Launch of Rocket Lab
He built a rocket-powered bike when he was a kid. Now he leads the company that has made New Zealand number three among nations that launch big rocket...
Triumph and turmoil: Artemis II and the renewed fight to save NASA science
The Artemis II crew has returned home safely after a historic 10-day journey around the Moon, the first crewed lunar mission in over 50 years. In this...
Artemis II launches to the Moon
Four astronauts — Commander Reid Wiseman, Pilot Victor Glover, Mission Specialists Christina Koch and Jeremy Hansen — are on their way around the Moon...
Space Policy Edition: Return to Launch — Cape Canaveral's unlikely history
What makes Cape Canaveral the center of U.S. spaceflight? The answer is a fascinating mix of geography, military strategy, Cold War politics, and a fa...
Artemis II’s AVATAR and a sungrazing comet
Artemis II is the first crewed lunar mission since Apollo 17, and riding alongside the crew is one of the most ambitious biology experiments ever sent...
The astronaut health experiments of Artemis II
Artemis II is about more than getting four humans to the Moon and back. It's an opportunity to gather data on human health in deep space that we haven...
Book Club Edition: The Giant Leap: Why Space is the Next Frontier in the Evolution of Life
Join us for an awe-inspiring conversation with astrobiologist and astronomer Caleb Scharf as he eloquently makes the case for "dispersal," the nearly...
The 18th European Space Conference: Dreaming of European boots on the Moon
Humanity is going back to the Moon, and Europe is already playing a critical role in making it happen. This week, Planetary Radio brings you voices st...
Starman: Looking back on a life exploring the Solar System
Gentry Lee spent nearly five decades at NASA's Jet Propulsion Laboratory, and in that time he helped shape some of the most ambitious missions in the...
Space Policy Edition: Is there really a space race between the US and China?
Is the United States really in a new space race with China? Or is that framing missing the bigger picture?
In this Space Policy Edition of Plane...
Artemis update: NASA reshapes the road back to the Moon
NASA has announced a major restructuring of the Artemis program, reshaping the roadmap for returning humans to the Moon.
At a February 27 press...
Did an impact trigger cryovolcanism on Umbriel?
Could a single ancient impact have briefly transformed one of the Solar System’s darkest moons into a cryovolcanic world?
When Voyager 2 flew pa...
Book Club Edition: Planetary Society Chief Scientist Bruce Betts’ latest for kids
They informed and entertained together throughout the first 20 years of Planetary Radio. Listen in as the Society’s chief scientist and book club edit...
A new chapter at The Planetary Society: Jennifer Vaughn becomes CEO
This week on Planetary Radio, we mark a major leadership transition at The Planetary Society. Host Sarah Al-Ahmed sits down with Bill Nye, outgoing ch...
Where did Earth’s water come from? Clues hidden in Apollo Moon dust
Where did Earth’s water come from? In this episode of Planetary Radio, we explore how scientists are answering that question by studying a remarkably...
Space Policy Edition: What a NASA Authorization bill actually does
What does a NASA authorization bill actually do, and why does it matter? In this episode of Space Policy Edition, we dig into one of the most misunder...
Europa’s quiet seafloor
What if Europa’s seafloor isn’t alive with activity after all?
This week on Planetary Radio, host and producer Sarah Al-Ahmed explores new resea...
Artemis II and III: The science that brings us back to the Moon
Humans are preparing to return to the Moon. On this episode of Planetary Radio, host Sarah Al-Ahmed is joined by Kelsey Young and Noah Petro, two of t...
NASA science saved: Inside the 2026 budget victory
After months of uncertainty, NASA science has been spared from the largest proposed budget cuts in the agency’s history. In this episode of Planetary...
Book Club Edition: The Little Book of Aliens by Adam Frank
Famed astrophysicist and science communicator Adam Frank shares his sense of wonder and humor in a live conversation about his excellent new book, “Th...
IMAP and the shape of the heliosphere
Our Solar System is wrapped in a vast, invisible bubble created by the Sun, a protective region that shields Earth and the planets from much of the ra...
Voyager and the heliopause: Exploring where the Sun gives way to the stars
What does it really mean to enter interstellar space, and what have we learned since humanity first crossed the invisible boundary between our Sun and...
Space Policy Edition: Change for the Sake of Disruption at NASA
Marcia Smith, the founder and editor of Space Policy Online, joins the show and revisits a conversation we had one year ago, recorded just weeks befor...
Looking back: Space exploration in 2025
As 2025 comes to a close, Planetary Radio looks back on a year that reshaped space exploration, through stunning discoveries, major milestones, unexpe...
Looking back: Space policy and advocacy in 2025
2025 was one of the most consequential years for space policy in modern U.S. history.
In this special year-in-review episode, Planetary Radio ta...
Book Club Edition: MOONS: The Mysteries and Marvels of our Solar System by Kate Howells
It was such a delight to feature work by our own Kate Howells in The Planetary Society’s member book club. We keep Kate busy as our public education s...
Galileo at 30: How a mission transformed our understanding of Jupiter
Thirty years ago, NASA’s Galileo spacecraft became the first mission to orbit Jupiter, opening a new chapter in our exploration of the outer Solar Sys...
Space Policy Edition: The Moral Case for Space Science
Why do we explore space, and why does science matter in the first place?
In this Space Policy Edition rerun, Planetary Society Chief of Space Po...
Inside the 2025 Mars Society Convention
The 2025 International Mars Society Convention convened at the University of Southern California this October for three days of passionate discussion...
ESCAPADE begins its journey to Mars
NASA’s twin ESCAPADE spacecraft have finally launched on their journey to Mars. Designed to study how the solar wind interacts with Mars’ patchy magne...
Smart Girl Dumb Questions: Casey Dreier answers why space is worth it
This week on Planetary Radio, we’re sharing a special conversation from our friends at the Smart Girl Dumb Questions podcast. Host Nayeema Raza sits d...
Book Club Edition: The Martians: The True Story of an Alien Craze that Captured Turn-of-the-Century America by David Baron
There was a time when almost everyone, from Alexander Graham Bell to the Wall Street Journal, believed there was a supremely intelligent civilization...
Epic Spaceman: Making cosmic scale human
When his filmmaking career stalled during the pandemic, Toby Lockerbie turned to the one place that had never stopped inspiring him: the Universe. Wit...