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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A Big Test for LightSail 2

The Planetary Society’s solar sail spacecraft was in the middle of a critical test as we spoke with the Society’s Bruce Betts and Jason Davis.

NASA's Science Leader John Grunsfeld

John Grunsfeld closes our coverage of the Space Foundation’s 32nd annual Space Symposium in Colorado Springs. We also meet the leaders of the New Generation Space Leaders Program.

Dream Chaser: The Return of the Spaceplane

We’re back at Space Symposium for a conversation with SNC’s Mark Sirangelo, leader of that company’s effort to build the Dream Chaser. We’ll also hear a few moments of Bill Nye’s session at the annual gathering as he hosted Bernard Foing and Amy Mainzer.

A Death Valley Conversation About Life, The Universe and Everything With Tyler Nordgren and Jill Tarter

Beautiful Death Valley National Park was the setting for a fascinating conversation with famed SETI researcher Jill Tarter and celebrated astronomer, artist and photographer Tyler Nordgren.

Exploring Europa and Mining Asteroids at Yuri’s Night

Our special coverage from the Los Angeles Yuri’s Night party continues with Chris Lewicki of Planetary Resources along with Bob Pappalardo and Boback “Mohawk Guy” Ferdowsi who are preparing an orbiter for Jupiter’s ocean world Europa.

Michel Mayor, Discoverer of the First Extrasolar World

Michel Mayor and his team rocked the astronomy world with their 1995 announcement, but this modest man says it was a discovery whose time had come.

Ashwin Vasavada, Leader of Scientists Roving Mars

The new Mars Science Laboratory Project Scientist is not new to the mission. Ashwin Vasavada has worked on the Curiosity rover since 2004.

Neil Gehrels and WFIRST—A Space Telescope for the 2020s

NASA has given the go-ahead for creation of the Wide-Field Infrared Survey Telescope. It might help reveal the nature of dark energy and point the way to life among the stars.

NASA’s New Planetary Defense Office

Lindley Johnson has just been named NASA's first Planetary Defense Officer. He's joined on this week's PlanRad by astronomer Kelly Fast, the new manager of the Near Earth Object Observation Program.

Master of the Moon Rocks: NASA Astromaterials Curator Francis McCubbin

Francis McCubbin is the new Astromaterials Curator at NASA's Johnson Space Center, where the priceless collection includes the Apollo moonrocks. Join host Mat Kaplan's visit.

Planetary Radio Extra: Planetary Society Experts 2015 Review

Bruce Betts, Jason Davis, Casey Dreier and Emily Lakdawalla gather with Mat Kaplan for a fascinating and informative Planetary Radio Extra year-in-review roundtable discussion.

2015: A Great Year for Space Exploration

Our year-end review features the “best of 2015” lists from Jason Davis, Casey Dreier, Emily Lakdawalla and Bill Nye the Science Guy. What’s Up offers planets, a comet, and a nice prize package for the space trivia contest.

Congressman John Culberson on a Good Day for Space

The newly-approved federal budget includes great news for fans of space exploration and development. Texas Congressman John Culberson led the fight for a Europa mission, the SLS rocket, commercial crew and more. He tells us why on this week’s show.

A 35th Anniversary Party With Neil Tyson!

It was a grand night at the Pasadena Civic Auditorium. CEO Bill Nye led the Planetary Society’s 35th anniversary party with guests including Neil deGrasse Tyson and Deputy NASA Administrator Dava Newman. We present a very brief sampling of the celebration.

A Conversation with Andy Weir of “The Martian”

“The Martian” has won universal acclaim from scientists, astronauts, NASA, science fiction fans, and people who thought they weren’t science fiction fans. Mat Kaplan talks with the author about his harrowing, uplifting, amazingly detailed and realistic tale.

Pluto Amazes!

Hal Weaver is a very happy Project Scientist. His New Horizons spacecraft has shocked his fellow researchers with magnificent images and data. He shares the excitement this week.

Big Rockets and Little LightSails

Digital editor Jason Davis is a lucky guy. He follows and reports on human spaceflight progress, as well as the progress of the LightSail solar sail, which is about a year from its next flight.

Humans Orbiting Mars!

Scott Hubbard and John Logsdon led the Humans Orbiting Mars Workshop last spring. They return with Casey Dreier as the report on that workshop is released to the world.

Zibi Turtle and a Mission to the Ice Giants

They are the most neglected planets in our solar system, but that status may be changing. Planetary scientist Elizabeth “Zibi” Turtle celebrates NASA’s announcement that it will study a mission to Uranus or Neptune.

Zooming In On Mars With Mastcam-Z

Planetary Radio talks with Jim Bell and Justin Maki, leaders of the development team for the most advanced camera ever planned for the surface of Mars.

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