Planetary Radio

Let The Planetary Society’s weekly podcast take you to the outer reaches of the Solar System and beyond. Host Sarah Al-Ahmed visits with scientists, engineers, mission leaders, astronauts, advocates, and writers who provide their unique and exciting perspectives on the exploration of our universe. New episodes are published every Wednesday.

We are proud to feature Planetary Radio: Space Policy Edition on the first Friday of every month. The Planetary Society's Chief of Space Policy Casey Dreier dives deep into the policy and politics behind what we do and where we go in space.

You can also enjoy Planetary Radio: Book Club Edition every month. Hosted by the creator of Planetary Radio and The Planetary Society's Senior Communications Adviser, Mat Kaplan, the Book Club Edition podcast features discussions with authors of space-themed books

Latest Episodes

Space Policy Edition: Should a (potential) biosignature revive Mars Sample Return?

In 1996, a controversial claim of fossilized life in a Martian meteorite ignited a golden age of Mars exploration. Nearly 30 years later, a potential biosignature detected by the Perseverance rover at Jezero Crater has sparked… no major policy changes. Why? Lou Friedman joins the show to present his view.

Do Aliens Speak Physics?

Physicist Daniel Whiteson and cartoonist Andy Warner join Sarah Al-Ahmed to explore their new book, “Do Aliens Speak Physics?”

Ripples on the Cosmic Ocean

Historian Dagomar Degroot joins Planetary Radio to discuss his new book, “Ripples on the Cosmic Ocean: An Environmental History of Our Place in the Solar System,” which reveals how events across the Solar System have shaped life on Earth.

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Sarah Al-Ahmed portrait
Planetary Radio Host Sarah Al-Ahmed is the host of Planetary Radio, The Planetary Society’s renowned, weekly space podcast and radio program.Image: The Planetary Society