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.

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Space Policy Edition: What a NASA Authorization bill actually does

Chief of Space Policy Casey Dreier and Director of Government Relations Jack Kiraly break down what NASA authorization bills actually do and why these laws matter for long-term U.S. space policy, from science missions to human spaceflight and planetary defense.

NASA science saved: Inside the 2026 budget victory

Congress has passed a budget that restores near-full funding for NASA science after months of uncertainty. We break down what was saved, what was lost, and what comes next.

Space Policy Edition: Change for the Sake of Disruption at NASA

After DOGE cuts, mass staff departures, and a blink-and-you-missed-it pivot to Mars, how much did NASA actually change in 2025? Space Policy Online founder Marcia Smith returns to assess a turbulent year.

Looking back: Space policy and advocacy in 2025

As NASA faces unprecedented proposed cuts to its science programs, Planetary Radio looks back at a pivotal year for U.S. space policy and advocacy. The Planetary Society’s space policy team unpacks what happened, why funding uncertainty matters, and what comes next for space science.

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.

Bill Nye: A star in Hollywood, a voice for NASA

Bill Nye, CEO of The Planetary Society, celebrates his new star on the Hollywood Walk of Fame and joins us to reflect on its meaning. We also receive the latest space policy updates as NASA faces significant budget challenges.

New Horizons: Celebrating a decade since the Pluto flyby

New Horizons Principal Investigator Alan Stern joins us to celebrate the Pluto flyby’s 10th anniversary, with updates from planetary scientist Adeene Denton and Planetary Society Director of Government Relations Jack Kiraly. Plus, a look at Arrokoth in What’s Up with Bruce Betts.

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 2026 budget proposal.

The Giant Magellan Telescope takes its next big step

The Giant Magellan Telescope advances toward construction with support from the National Science Foundation. Dr. Rebecca Bernstein joins us to explore how this groundbreaking observatory will transform our view of the universe.

The human stories behind the science: Dava Sobel receives the Cosmos Award

Dava Sobel receives The Planetary Society’s Cosmos Award for her extraordinary storytelling about science and discovery. We celebrate her work, hear from Bill Nye, and share updates on space policy and science communication.

The dark age of NASA science? Analyzing the FY 2026 budget proposal

The Fiscal Year 2026 congressional budget justification for NASA could mark the beginning of a dark age for NASA science. We examine what’s at stake and how you can help advocate for NASA’s future.

Space science under fire: Your questions answered

We tackle the biggest questions about NASA's value, space exploration, and why public investment matters. Join us for a Q&A with Casey Dreier and Ambre Trujillo, and a space policy update with Jack Kiraly.

TOI-270 d: Unveiling the secrets of a sub-Neptune

Explore the atmosphere of TOI-270 d with planetary geochemist Chris Glein as he unravels the secrets of this distant sub-Neptune using JWST data and geochemical modeling.

Space Policy Edition: How NASA remembers—and forgets

No one person knows how to build a spaceship. What happens to NASA’s collective knowledge when thousands of employees lose their jobs?

From backyard telescopes to global reach: AstroKobi and the power of short-form space videos

Astrokobi joins Sarah Al-Ahmed to explore the rise of a new generation of space communicators. Plus, updates on NASA’s science budget and the confirmation process for the next NASA administrator.

Passback budget breakdown: A 47% cut to NASA science

NASA's science programs face a proposed 47% budget cut. We break down what's at risk and how you can take action to help protect space exploration.

Space Policy Edition: Lies, damned lies, and space data

The space sector is data-rich but insight-poor. Jack Kuhr of Payload talks about how he turns raw numbers into real narratives.

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.C., immediately following The Planetary Society’s Day of Action.

An extinction-level event for NASA science

A reported 50% cut to NASA’s science budget threatens to shut down missions, halt new discoveries, and devastate scientific space exploration. This week, we break down the fight ahead with The Planetary Society’s space policy team and explore how grassroots advocacy can help protect the future of space science.

Space Policy Edition: The Challenges of Change at NASA

Marcia Smith, founder of Space Policy Online, joins the show to discuss the motivations and risks of pursuing change at NASA - and how much change can ultimately happen with Congress holding the purse strings.

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