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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Under Alien Skies with Phil Plait

Phil Plait, the Bad Astronomer, joins Planetary Radio to discuss his new book, Under Alien Skies: A Sightseer’s Guide to the Galaxy.

Yuri’s Night: For all SpaceKind

Join us as we delve into the heart of LA's 2023 Yuri's Night party, a celebration commemorating Yuri Gagarin's pioneering 1961 voyage into space.

Space Policy Edition: The motives behind NASA's billions — Jean Toal Eisen on how Congress funds the final frontier

Jean Toal Eisen, former senior staff on the Senate Appropriations Committee, joins the show to reveal the decision-making process, priorities, and motivations of those who control the U.S. space program's funding.

Two Years of Hope: Celebrating the Emirates Mars Mission

Join us as we celebrate the accomplishments of a truly inspiring space mission - the United Arab Emirates' Hope probe, which has spent two amazing years orbiting Mars!

Volcanic Venus? New insights from vintage data

Robbie Herrick and Scott Hensley, the minds behind a new paper on recent potential volcanic activity on Venus, join Planetary Radio to discuss their discovery and what it means for the future of Venusian exploration.

Getting psyched for Psyche

Lindy Elkins-Tanton, the principal investigator for NASA’s Psyche mission to explore a metallic asteroid, joins Planetary Radio to share the mission’s status and look forward to the wonders that await when the spacecraft reaches its target.

Universal Harmonies: Sonifying images for science and accessibility

Kim Arcand from NASA’s Chandra X-ray Observatory joins Planetary Radio to share her team’s new album Universal Harmonies.

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.

Space Policy Edition: The Tricky Ethics of Space Settlement

Dr. Erika Nesvold, astrophysicist and author of the new book Off-Earth: Ethical Questions and Quandaries for Living in Outer Space explores the ethical challenges facing our species as it dips its toe into living beyond our home planet.

The Canadian Lunar Rover with Peter Visscher

Director of Canadensys West Peter Visscher fills us in on the upcoming Canadian lunar rover. Visscher has been working on the rover for years.

Martian rock collecting: From meteorites to Mars Sample Return

Meenakshi Wadhwa, principal scientist for Mars Sample Return at NASA JPL, updates us on the missions that will bring bits of the red planet back to Earth.

Are we alone? The search for alien technosignatures

A new volunteer SETI science project to search for alien technosignatures has launched! Two of its creators tell you how to sign up.

More on Mars’ Watery History

Mars expert Tanya Harrison shares the details on some of the newest discoveries about Mars’ history, including potential megatsunamis and the discovery of opals in Gale Crater.

Space Policy Edition: The White House's Matt Daniels on the U.S.'s New Cislunar Strategy

Dr. Matt Daniels of the White House's Office of Science and Technology Policy joins the show to discuss the White House’s new cislunar space strategy, its ambitions, and implications for the future of lunar exploration and development.

JWST confirms its first exoplanet

We celebrate the James Webb Space Telescope's first confirmed exoplanet discovery this week on Planetary Radio. Jacob Lustig-Yaeger, one of the leads on the team that made the detection, joins us to discuss the details.

Juno Journeys to Jupiter’s Moons

Dive into the latest discoveries about Jupiter’s moons, Ganymede, Europa, and Io, with Scott Bolton, the principal investigator for NASA’s Juno mission.

Martian Mic Drop

Jason Achilles, a musician who partnered with NASA’s JPL to help put one of the first microphones on Mars, shares his journey and the joy of listening to the sounds of the red planet.

Celebrating NASA’s Artemis I mission to the Moon

Jeremy Graeber, the assistant launch director at Kennedy Space Center in Florida, joins Planetary Radio to recount his experience on the night of Artemis I’s historic launch.

Space Policy Edition: JPL Director wants "every brain" to have the chance to work in space exploration

Jet Propulsion Laboratory Director Laurie Leshin wants to give every brain in the country the opportunity to work in space exploration.

Planetary Radio stories with Mat Kaplan

New host Sarah Al-Ahmed bids a fond farewell to Mat Kaplan, Planetary Radio’s former host, in a special interview as Mat shares stories from his two decades as creator and producer of the show.

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