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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2025 NASA’s Innovative Advanced Concepts Symposium: Part 1 — Lunar glass and starshades
Each year, NASA’s Innovative Advanced Concepts program (NIAC) funds visionary ideas that could shape the future of space exploration. In this first of...
A Day of Action to save NASA science
On October 6, 2025, hundreds of space advocates from across the United States joined The Planetary Society and 20 partner organizations on Capitol Hil...
Space Policy Edition: China’s growing space science ambitions
If the United States is indeed in a space race with China, then we cannot abandon space science. That’s the claim made by Maxwell Zhu and The Planetar...
Perseverance finds potential biosignatures in Jezero Crater
NASA’s Perseverance rover has made one of its most intriguing discoveries yet in Jezero Crater. A rock sample called Sapphire Canyon, drilled from the...
Bill Nye: A star in Hollywood, a voice for NASA
Bill Nye, CEO of The Planetary Society, has officially joined the Hollywood Walk of Fame. In this episode, we speak with Bill about what this rare hon...
Book Club Edition: Cosmos Award–winning author Dava Sobel
Only six people have received The Planetary Society’s Cosmos Award for Outstanding Public Presentation of Science. We were honored to present it to au...
A cosmic travel guide: 111 Places in Space That You Must Not Miss
Pack your cosmic suitcase. This week on Planetary Radio, host Sarah Al-Ahmed is joined by Mark McCaughrean, astronomer, science communicator, and form...
International Observe the Moon Night 2025
This week on Planetary Radio, we look forward to International Observe the Moon Night on October 4, 2025. Host Sarah Al-Ahmed speaks with Staci Horvat...
Space Policy Edition: Does the rise of Elon mean the decline of NASA?
NASA, the crown jewel of 20th-century technocratic liberalism, was the first to land humans on the Moon but now depends on SpaceX for its access to sp...
Uranus revealed: Solving the ice giant’s heat mystery
For decades, Uranus has puzzled scientists. Unlike the other giant planets, Voyager 2’s 1986 flyby suggested the ice giant emitted no excess heat. Now...
Esports and space: BASILISK’s quest for “Science Victory”
BASILISK, the first esports organization dedicated to promoting science, has teamed up with The Planetary Society and Caltech’s Institute for Quantum...
Silicate clouds and a dusty ring: JWST looks at YSES-1
In 2020, the YSES-1 system became the first directly imaged multiplanetary system around a Sun-like star. It features two giant exoplanets orbiting a...
Book Club Edition: Exploring the Overview Effect with Frank White
Author Frank White has interviewed well over 100 astronauts. Almost all of them report the sense of awe they experienced as they looked down or back a...
A “Star Trek” future: Your place in space
What do “Star Trek,” space advocacy, and the fight to save NASA science have in common? In this episode of Planetary Radio, we share a special panel r...
3I/ATLAS: The third interstellar object ever found
Just three interstellar objects have ever been detected in our Solar System, each arriving from the depths of interstellar space. In this episode, we...
Space Policy Edition: Is this the moment for in-space nuclear power?
The 2020s will be a decisive decade for in-space nuclear power. So argues Dr. Bhavya Lal, whose new report reframes the conversation around a simple i...
The science of sleep in space
How do astronauts get quality sleep in space? Erin Flynn-Evans, director of the Fatigue Countermeasures Laboratory at NASA Ames Research Center, joins...
New Horizons: Celebrating a decade since the Pluto flyby
On July 14, 2015, NASA’s New Horizons spacecraft made its historic flyby of Pluto, transforming our understanding of this distant world. Ten years lat...
Book Club Edition: Andy Weir and Project Hail Mary
Author Andy Weir was as shocked as anyone when The Martian became a top bestseller novel in the US. He repeated that achievement with his equally mind...
Mat Kaplan’s first flight in zero-G
What happens when scientists, students, space communicators, and refugee engineers float together in zero gravity? Former Planetary Radio host Mat Kap...
First images from the Vera C. Rubin Observatory
The Vera C. Rubin Observatory has shared its first public images, revealing millions of galaxies, stars, and asteroids in stunning detail. Stephanie D...
Space Policy Edition: Are Democrats falling behind on space policy?
Have Democrats ceded leadership in space policy? That’s what Mary Guenther believes. She’s the Director of Space Policy at the Progressive Policy Inst...
Space science and the Artemis Accords: Highlights from the 2025 H2M2 Summit
Recorded at the 2025 Humans to the Moon and Mars Summit (H2M2) in Washington, D.C., this episode features two powerful conversations about the future...
Space Policy Edition: NASA’s 2026 budget
Alicia Brown from the Commercial Space Federation and Brittany Webster from the American Geophysical Union join the show to discuss NASA’s fiscal year...
The Giant Magellan Telescope takes its next big step
The Giant Magellan Telescope (GMT) is poised to become one of the most powerful ground-based observatories ever built. On June 12, 2025, the U.S. Nati...
The human stories behind the science: Dava Sobel receives the Cosmos Award
Few writers have captured the wonder of science through storytelling as powerfully as Dava Sobel. In this episode, we celebrate her remarkable career...
Making space matter: A space journalist’s journey
What does it take to turn a love of space into a global career in science journalism? Sarah Cruddas has done just that. With a background in astrophys...
Space Policy Edition: What does NASA need with an economist?
Former NASA Chief Economist Akhil Rao explains why NASA needs economic expertise to navigate the complex—and often misunderstood—market forces that wi...
The dark age of NASA science? Analyzing the FY 2026 budget proposal
The White House has released its Fiscal Year 2026 congressional budget justification for NASA, and the implications are staggering. If enacted, this p...
Volcanic worlds across the Solar System
Volcanoes aren’t just an earthly phenomenon. They’re found all across the Solar System. In this compilation episode of Planetary Radio, we explore vol...
Space science under fire: Your questions answered
As debates over NASA's future heat up, questions about the value of space exploration are popping up everywhere. This week on Planetary Radio, we're t...
Kosmos 482: The Soviet-era Venus probe that fell to Earth
This week on Planetary Radio, we explore the decades-long journey of Kosmos 482, a Soviet-era Venus probe that spent 53 years orbiting Earth before it...
TOI-270 d: Unveiling the secrets of a sub-Neptune
TOI-270 d is revealing secrets about the most common type of planet in our galaxy, sub-Neptunes. Sarah Al-Ahmed is joined by planetary geochemist Chri...
Space Policy Edition: How NASA remembers—and forgets
No one person knows how to build a spaceship. Dr. Janet Vertesi has seen this firsthand. She’s spent years embedded in NASA science teams, not as a pa...
From backyard telescopes to global reach: AstroKobi and the power of short-form space videos
How does someone go from stargazing in a rural Australian backyard to inspiring millions around the world about space science? This week, Sarah Al-Ahm...
Celebrating 45 years of The Planetary Society at the Cosmic Shores Gala
Join us aboard the historic RMS Queen Mary for a celebration of The Planetary Society’s 45th anniversary. In this special episode of Planetary Radio,...
Passback budget breakdown: A 47% cut to NASA science
NASA’s science programs are facing the largest proposed budget cut in more than 40 years. This staggering 47%reduction could cancel missions, waste bi...
Why is Mars red? A new clue to the history of habitability in Martian dust
For decades, scientists hypothesized that Mars’ reddish color came from hematite, an iron oxide thought to have formed through dry oxidation after Mar...
Space Policy Edition: Lies, Damned Lies, and Space Data
The space sector is data-rich but insight-poor. Jack Kuhr, head of research at Payload Space, joins the show to unpack how business, budgeting, and pe...
Live from Washington, D.C.: The future of space politics
Join Sarah Al-Ahmed and Casey Dreier for a special live recording of Planetary Radio at the Johns Hopkins University Bloomberg Center in Washington, D...