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Planetary Radio: Space Exploration, Astronomy and Science

The Planetary Society
Planetary Radio: Space Exploration, Astronomy and Science
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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 two episodes from the 2025 NIAC Symposium in Philadelphia, Pennsylvania, USA, Planetary Radio host Sarah Al-Ahmed introduces some of the concepts presented at this year’s event. You’ll hear from Martin Bermudez and Josh Simpson from Skyeports LLC. Bermudez is the company’s CEO and principal investigator for the LUNGS Project, and Simpson is a glass artist and co-investigator. Together, their team is exploring how to build glass-blown lunar habitats from melted Moon dust. You’ll also meet Christine Gregg, research engineer at NASA’s Ames Research Center, who’s developing architected metamaterials to stabilize giant space structures. And finally, John Mather, Nobel laureate and senior astrophysicist at NASA’s Goddard Space Flight Center, shares his team’s work on an inflatable starshade that could help us see Earth-like worlds around distant stars. Then stick around for What’s Up with Dr. Bruce Betts, chief scientist of The Planetary Society. Discover more at: https://www.planetary.org/planetary-radio/2025-niac-symposium-part-1See omnystudio.com/listener for privacy information.
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  • 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 Hill to deliver one clear message: protect NASA’s science budget. We begin with Ari Koeppel, AAAS Science & Technology Policy Fellow and Space Policy Intern at The Planetary Society, who shares why this moment matters for scientists facing uncertainty about their future. Then Britney Schmidt, planetary scientist at Cornell University and member of The Planetary Society’s Board of Directors, calls in from Washington, D.C., to share what it’s like on the ground as hundreds of advocates come together to defend the future of space science. Next, we take you to the press conference on the steps of the U.S. Capitol, featuring Bill Nye, CEO of The Planetary Society, Representative Glenn Ivey of Maryland’s 4th District, Marcel Agüeros, president-elect of the American Astronomical Society, and Brandon Jones, President of the American Geophysical Union. Together, they urge Congress to restore NASA’s science funding and maintain the United States' leadership in discovery. We close with Casey Dreier, chief of space policy at The Planetary Society, reflecting on the power of grassroots advocacy and what comes next for the Save NASA Science campaign. Finally, in What’s Up, Bruce Betts, The Planetary Society’s chief scientist, joins host Sarah Al-Ahmed to look ahead, exploring the great mysteries we could solve in the coming years if we continue to invest in space science. Discover more at: https://www.planetary.org/planetary-radio/2025-day-of-action-for-nasa-scienceSee omnystudio.com/listener for privacy information.
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  • 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 Planetary Society’s chief of space policy, Casey Dreier, in a recent op-ed in Payload Space. Their piece contrasted the growing ambitions of China’s coming space science program against the draconian cuts proposed by the White House in 2026. The results are stark: where China is pursuing new missions, the United States is abandoning them. Casey and Maxwell explore why this is the case, whether China sees this investment as part of a competition at all, and the structural challenges of integrating space science into a geopolitical context. Discover more at: https://www.planetary.org/planetary-radio/maxwell-zhu-on-chinas-space-science-ambitionsSee omnystudio.com/listener for privacy information.
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  • 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 Bright Angel formation, contains unusual chemical and mineral patterns that may be potential biosignatures. We begin with remarks from Morgan Cable, research scientist at NASA’s Jet Propulsion Laboratory and co–deputy principal investigator of the PIXL instrument on Perseverance, in a video released alongside NASA’s September 10, 2025 announcement. Then, host Sarah Al-Ahmed speaks with Joel Hurowitz, associate professor of geosciences at Stony Brook University and deputy principal investigator of the PIXL instrument on Perseverance, who is also the lead author of the new Nature paper detailing the findings. Hurowitz explains how textures nicknamed "poppy seeds" and "leopard spots" connect organic carbon with minerals like vivianite and greigite, and why these could represent some of the most compelling evidence yet for ancient microbial life on Mars. Finally, in this week’s What’s Up, Bruce Betts, The Planetary Society’s chief scientist, joins Sarah to explore earlier moments in the history of Mars exploration when tantalizing hints of life sparked scientific and public excitement. Discover more at: https://www.planetary.org/planetary-radio/2025-perseverence-biosignaturesSee omnystudio.com/listener for privacy information.
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  • 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 honor means to him and to science communication. Then, we take you inside the star ceremony in Los Angeles, where friends and fans, including Boston Celtics star Jaylen Brown, paid tribute to his legacy. From there, we shift to Washington, D.C., where NASA faces the threat of deep budget cuts. Planetary Society Chief of Space Policy Casey Dreier and Director of Government Relations Jack Kiraly share the latest updates as we prepare for the upcoming Day of Action. We close with Bruce Betts and What’s Up, reflecting on the unexpected adventures that come with working in space science. Discover more at: https://www.planetary.org/planetary-radio/2025-bill-nye-starSee omnystudio.com/listener for privacy information.
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Om 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 Sarah Al-Ahmed and Planetary Society colleagues including Bill Nye the Science Guy and Bruce Betts as they dive deep into space science and exploration. The monthly Space Policy Edition takes you inside the DC beltway where the future of the US space program hangs in the balance. Visit planetary.org/radio for an episode guide and much more.
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