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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Humans to Mars by the 2030s? NASA Associate Administrators weigh in

Planetary Radio, Mat Kaplan, senior communications adviser at The Planetary Society, takes us to the 2023 Humans to Mars Summit in Washington, D.C. We'll share his conversation with three NASA Associate Administrators, Nicola Fox, James Free, and James Reuter about the international, commercial, and robotic collaboration it will take to put the first humans on the Red Planet.

Looking back on Voyager’s 45th Anniversary

Planetary Radio’s creator Mat Kaplan guest hosts for this look back at the Jet Propulsion Lab’s celebration of the 45th anniversary of the Voyager mission.

The Voyager Mission: A 45th Anniversary Celebration

It’s a party for Voyager and the team of scientists, engineers and others who have followed it across our Solar System. Then we’ll visit with Ann Druyan, creative director for the Voyager Golden Record.

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.

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.