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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Syzygy science: Discoveries made during total solar eclipses

Planetary Radio marks its last show before the Apr. 8 total solar eclipse with a look back at discoveries made during totality.

Eclipse Tips: A guide to safe observing and astrophotography

Ron Benner, the President of the American Optometric Association, and astrophotographer Andrew McCarthy give helpful tips for safely observing the upcoming total solar eclipse in North America.

Tales of totality: The adventures of an eclipse chaser

Jim Bell, a professor from the School of Earth and Space Exploration at Arizona State University and former president of The Planetary Society's Board of Directors, shares captivating tales from his global eclipse-chasing journeys.

Exploring solar eclipses through time

Ed Krupp, the director of Griffith Observatory in Los Angeles, shares insights from the fascinating field of archaeoastronomy.

The 20th landing anniversary of Spirit and Opportunity

Matt Golombek, project scientist for the Mars Exploration Rover Project, joins Planetary Radio to celebrate the 20th anniversary of the landing of the Spirit and Opportunity rovers on Mars.

Psyche and Eclipse Company blast off

Jesse Tomlinson and Stephen Watkins from The Eclipse Company join Planetary Radio to talk about their partnership with The Planetary Society and the launch of their new eclipse map for the upcoming 2024 total solar eclipse in North America.

InSight's revelation on Mars’ rotation

The InSight RISE instrument's principal investigator, Sebastien Le Maistre, from the Royal Observatory of Belgium, joins Planetary Radio to discuss Mars' increased rotation speed.

The slow evolution of Europa

Kevin Trinh from Arizona State University joins Planetary Radio to discuss his research into Europa's formation history and the consequences for the moon's habitability.

2Fast 2Curious: Finding the source of the fast solar wind

James Drake from the University of Maryland joins Planetary Radio to talk about the latest results from NASA's Parker Solar Probe as it soars closer to our star than any spacecraft in history.

We have touched the Sun: The Parker Solar Probe’s triumph

A spacecraft has penetrated the Sun’s corona for the first time, revealing unprecedented data and capturing a mind-blowing video.

Another Goldilocks World and the Space Telescope That Discovered It

Another near Earth-sized planet has been found in the habitable zone around a distant star, discovered by a powerful space telescope named TESS.

Starchaser: Extraordinary Astronomer Jay Pasachoff

Jay Pasachoff visits Planetary Society headquarters for a conversation about the latest edition of his and Alex Filippenko’s monumental textbook The Cosmos.

Giving Mysterious Venus the Love (and Science) She Deserves

We have so much to learn about Venus, says JPL scientist Sue Smrekar. What we learn will help us understand our own world and Mars.

Planetary Radio Live on the Eve of the Eclipse

With hours to go before the Great American Eclipse, nine outstanding guests joined host Mat Kaplan for Planetary Radio Live in front of 1,100 rowdy eclipse and space science fans.

Cassini Project Scientist Linda Spilker’s Last Appearance Before the Grand Finale

It’s the Grandest Finale. The spectacular Cassini mission’s exploration of Saturn will end on September 15th when the spacecraft plunges into the planet. Cassini Project Scientist Linda Spilker is back with one last mission update.

Ed Stone and Forty Years of Voyager in Space

It is most space fans’ favorite planetary science mission, and with good reason. We visit with the man who has been in charge of Voyager mission science for more than four decades.

Dark Energy Attracts? Astrophysicists Jason Rhodes and Alina Kiessling

JPL astrophysicists Alina Kiessling and Jason Rhodes were brought together by their fascination over the mystery of dark energy. They talk with Planetary Radio about their research and the many missions they are contributing to, including WFIRST, a unique new space telescope.

An Eye on the Sun (In the Middle of a Lake)

The world’s most powerful solar telescope has just been renamed for the man responsible for its creation. We’ll meet astrophysicist and helioseismologist Phil Goode, and we’ll enjoy a tour of the Goode Solar Telescope.

20 Years on Mars with Matt Golombek

When the Pathfinder lander reached Mars 20 years ago it began a Martian renaissance that has never paused. JPL scientist Matt Golombek was the mission’s Project Scientist. He looks back and to the future of our explorations at the Red Planet.

Thomas Edison, Eclipse Chaser!

Former NPR science reporter David Baron discusses the stories of men and women who made their way across the American West to view and document the total solar eclipse of 1878.

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