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.

China on the Final Frontier

China has big plans for a space station, exploration of the Moon and Mars, and possibly a mission that will follow Voyager beyond the edge of the solar system.

Crew Dragon Thrills While Mars Chills

After a special message we present highlights of the successful arrival at the International Space Station of the Crew Dragon spacecraft, followed by a visit to chilly Mars with planetary scientist Edgard Rivera-Valentin.

Looking for Life in Alien Oceans

JPL scientist Kevin Hand is endlessly fascinated by the possibility of life in the hidden oceans of the outer solar system’s moons, and now he has written a great book about the quest to discover it.

Space Policy Edition: Our Moral Obligation to Explore Space

Philosopher James Schwartz shares his thoughts about the ethics of space exploration, commercialization, and settlement.

Life on Mars: Joining the Quest with Penny Boston and Jim Green

The search for life on Mars is at a critical stage. What will come next if we find it?

The Slime Mold and the Universe

One of Earth’s lowliest creatures has inspired and guided a team of scientists toward an improved model for the distribution of galaxies and dark matter across the cosmos.

The Next 10 Years: Continuing our Solar System Tour

Our look ahead at the near-future of solar system exploration continues with Mars, the giant outer worlds, and the smaller bodies that can be found throughout the neighborhood.

The Next 10 Years of Planetary Exploration

Six scientists give us a preview of where planetary science may be taken in the next 10 years by a new NASA decadal survey.

Building Our Future on Mars

Civil engineer Peter Carrato believes we know how to use what’s available on Mars to build the human structures that will be needed by the first explorers.

The Search for 100 Earths

The search for worlds like our own is underway, but the challenges are enormous according to astronomers Debra Fischer and Joe Llama.

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.

Mighty Jupiter Revealed

Juno mission principal investigator Scott Bolton provides an enticing taste of the Jupiter orbiter’s mind-bending discoveries.

The Coming Descent to Asteroid Bennu

OSIRIS-REx mission leader Dante Lauretta takes us to mysterious asteroid Bennu where a first sample collection site has been selected.

The MILO Institute: Opening the Solar System for Exploration by All

Planetary Scientist Jim Bell and space entrepreneur Lon Levin are founders of a new non-profit that aims to make robotic space exploration much more achievable by institutions around the world.

In the Clean Room With the Mars 2020 Rover

Host Mat Kaplan and Planetary Society solar system specialist Emily Lakdawalla go inside NASA’s Jet Propulsion Laboratory clean room to see the Mars 2020 rover.

What’s Next for Mars Exploration?

Planetary Society board member and Caltech/JPL research scientist Bethany Ehlmann discusses how the Mars 2020 mission will search for life on the Red Planet.

Meet the Planetary Society’s Newest Asteroid Hunters

We talk with two of our 2019 Shoemaker NEO Grant winners, who received funding to help find, track, and characterize potentially hazardous asteroids.

Space Policy Edition: The Biggest Policy Moments of the Decade (with Marcia Smith)

As the 2010s come to a close, Marcia Smith, the founder of Space Policy Online, rejoins the show to explore the most significant and impactful space policy decisions of the 2010s.

A Spirited Conversation with Carolyn Porco

A fun conversation with the leader of the Cassini imaging team, and an audio tour of the transit of Mercury with astronomer Jay Pasachoff.

Exploring Venus, Earth's Mysterious Sister Planet

Astrophysicist Javier Peralta, a team member on Japan's Akatsuki mission, takes us deep into Venus's thick, fast-moving clouds.

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