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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Life, the Universe and Britney Schmidt

Britney Schmidt is preparing us for the day when a submarine will slip into the seas of an ocean world like Europa to search for life.

Space Policy Edition: How Russia's Invasion of Ukraine Has Changed Space, with Mariel Borowitz

International space policy and sustainability expert Mariel Borowitz explores with Casey Dreier how the war in Ukraine reaches beyond Earth in ways that are chilling and surprising.

The End of Astronauts?

Britain’s Astronomer Royal Martin Rees and science writer Don Goldsmith question the value of putting astronauts in harm’s way at great expense in their new book.

Yuri’s Night: Join the party!

Thousands celebrated the 61st anniversary of the first human voyage into space. We’ll take you to the Los Angeles party under the Space Shuttle Endeavour.

Space Policy Edition: NASA's 2023 Budget Request

A healthy $26 billion has been proposed for NASA next year, but there are at least a couple of troubling factors we’ll discuss as Congress begins its review.

X-raying the universe with Martin Weisskopf

X-ray astronomy is vital to solving some of the universe’s biggest mysteries. Martin Weisskopf’s brand new space telescope has joined the effort.

Space Policy Edition: What We're Watching in 2022

Planetary Society chief of D.C. operations Brendan Curry returns for a look ahead at what to expect in 2022.

Return to the Moon: Spacesuits and preparing for splashdown in the Pacific

Building the next spacesuit for Moon walkers, and a shipboard update on how the Artemis 1 Orion capsule will be recovered from the Pacific Ocean.

A good year for space: Planetary Society all-stars review 2021

Seven Planetary Society experts and enthusiasts celebrate 2021’s many space science and exploration milestones.

Space Policy Edition: We're entering a new era of planetary defense (with Lindley Johnson)

The head of NASA’s planetary defense program discusses how the DART mission represents a new era for defending our planet from dangerous asteroids.

Space Policy Edition: NASA's Congressional Logjam

Brendan Curry, The Planetary Society’s chief of Washington operations, helps us untangle the fast-changing and complex machinations underway in the US capitol. What does it mean for NASA?

Mars Beckons: The 2021 Humans to Mars Summit

Highlights of the annual gathering of leaders and experts who are building toward humans walking on the Red Planet.

Space Policy Edition: The cultural rituals of space advocacy, with Linda Billings

Space outreach expert and social scientist Linda Billings talks with host Casey Dreier about the language space advocates use to share their message.

Space Policy Edition: Mars via the Nuclear Option

NASA’s Bhavya Lal returns to explain the challenges and big advantages of nuclear propulsion in space.

Space Policy Edition: NASA's 2022 Budget Request Says "Yes"

The White House’s proposed 2022 NASA budget is almost entirely great news, as is the announcement that two complementary orbiters will explore Venus.

Space Policy Edition: How Starship at the Moon Brings NASA Closer to Mars

NASA chose SpaceX’s Starship as the sole winner of its human lunar lander development contract in a move that may also take us closer to Mars.

Space Policy Edition: Biden Names His NASA Administrator

It looks like former senator Bill Nelson will be NASA’s next administrator. Casey Dreier and Mat Kaplan talk about his nomination and other developments in Washington D.C., including The Planetary Society’s very successful Day of Action.

The Big Book of Mars: Our Obsession with the Red Planet

Author Marc Hartzman’s new book celebrates the wonder of the Red Planet and how it entered popular culture.

Space Policy Edition: The Big Picture on U.S. Science Funding

Matt Hourihan of the American Association for the Advancement of Science joins Casey Dreier for a deep dive into the U.S. government’s funding of science research and development.

Space Policy Edition: A Mob at the U.S. Capitol

Casey Dreier and our special guest, former National Space Council chief of staff Jared Zambrano-Stout, consider the troubling events at the U.S. Capitol in this special episode.

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