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.

A Great Week for Space Exploration

Andrew Westphal on what's been found in the Stardust Sample Return Capsule and John Spencer on the New Horizons launch and the upcoming Jupiter flyby.

Stardust Samples Streak Safely Home

Stardust Samples Streak Safely Home

A Special Reprise: The Planetary Society's 25th Anniversary Gala

A Special Reprise: The Planetary Society's 25th Anniversary Gala

Countdown to Sample Return: A Stardust Special

Countdown to Sample Return: A Stardust Special

Still Making a Deep Impact, with Jessica Sunshine

Still Making a Deep Impact, with Jessica Sunshine

Uranus and Neptune Take Center Stage With Heidi Hammel

Uranus and Neptune Take Center Stage With Heidi Hammel

NASA Administrator Michael Griffin, and Your Ticket to Space

NASA Administrator Michael Griffin, and Your Ticket to Space

Lou Friedman on China's Rising Star in Space

Lou Friedman on China's Rising Star in Space

A Martian Anniversary for Spirit and Opportunity!

One Martian year of Spirit and Opportunity on Mars with Jim Bell, Cornell University; Q and A on a crusty moon; special trivia contest prize.

Off to Pluto and Its Three Moons with Alan Stern

New Horizons PI Alan Stern on the mission to Pluto, and discovery of 2 new moons. Q&A: movies from rocket launches. New trivia contest.

Special Edition: Planetary Society's 25th Anniversary Gala

The Planetary Society celebrates 25 years with 300 close friends, including Ray Bradbury and Bill Nye. Also, a new What's Up space trivia contest.

Peering Down at Huygens: Cassini Revisits Mysterious Titan

Steve Wall, deputy leader of the Cassini RADAR team, on new images of Huygens' landing site and a shoreline. Asteroids on Q&A, new What's Up Contest.

Touring the Planets With Dava Sobel

Dava Sobel has just written The Planets. Not a drop of water on Jupiter's moon Io in Q and A, space headlines, and Mars comes close.

Ray Bradbury Returns!

The beloved author, poet and visionary is back to talk about his inspirations, the romance of space exploration, and much more. Q&A on the biggest object in the Kuiper Belt, and a new space trivia contest on What's Up.

Venus Express Leaves for Earth's Twin

Venus Express Project Scientist Håkan Svedhem talks about the first mission to the mysterious planet in more than a decade. Q&A on Jupiter's Great Red Spot and other storms. What's Up announces TWO new space contests.

Gamma Ray Bursts: Explaining the Universe's Biggest Bangs

Swift satellite principal investigator Neil Gehrels on what causes the universe's biggest explosions. Q&A on the rings of Saturn, and a new space trivia contest during our What's Up segment about the night sky and more.

Going Up! Ben Shelef of the Spaceward Foundation on Space Elevator Development

The Spaceward Foundation is about to host the first Space Elevator Games. Founder Ben Shelef talks about this and other projects. Q&A on where to look for life in our solar system and a new What's Up space trivia quiz.

NASA's Chief Scientist on the Vision for Space Exploration

NASA's Jim Garvin comments on the agency's just announced plans for human exploration and new spacecraft. Also Lou Friedman, Q&A on craters throughout the solar system, and Bruce Betts with a new What's Up contest.

Japanese Hayabusa Probe Reaches Asteroid

Project Manger Junichiro Kawaguchi celebrates the arrival at asteroid Itokawa, with further insights provided by former JPL Director Bruce Murray. Q&A on ice volcanoes, and a new trivia contest on What's Up.

The Mars Reconnaissance Orbiter's Project Manager and Project Scientist

MRO Project Manager Jim Graf and Project Scientist Rich Zurek introduce us to their powerful new spacecraft. Running out of big Near Earth Objects on Q&A, and we get Lost In Space

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