Explore Worlds
Find Life
Defend Earth
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.
Search Planetary Radio
Celebrate the third anniversary of LightSail 2’s launch with Bill Nye and other leaders of The Planetary Society.
Psyche asteroid mission principal investigator Lindy Elkins-Tanton returns with her excellent new memoir, A Portrait of the Scientist as a Young Woman.
Mat Kaplan helped host the Humans to Mars Summit in Washington D.C., where much of the community that is working to get us to Mars gathered.
Professor Bethany Ehlmann served on the steering committee for the new planetary science and astrobiology decadal survey that will steer future exploration of the solar system.
Join us for Planetary Radio Live at Imperial College London!
We were there when the Cassini spacecraft ended 13 years of exploration and revelation at Saturn.
Britney Schmidt is preparing us for the day when a submarine will slip into the seas of an ocean world like Europa to search for life.
The Mars 2020 rover has rolled into an ancient river delta on the Red Planet. Will we find evidence of past life there?
International space policy and sustainability expert Mariel Borowitz explores with Casey Dreier how the war in Ukraine reaches beyond Earth in ways that are chilling and surprising.
Suit up for an up-close encounter with the Psyche spacecraft that will soon launch toward the asteroid belt.
Britain’s Astronomer Royal Martin Rees and science writer Don Goldsmith question the value of putting astronauts in harm’s way at great expense in their new book.
Thousands celebrated the 61st anniversary of the first human voyage into space. We’ll take you to the Los Angeles party under the Space Shuttle Endeavour.
Fred Haise takes us on board the mission that almost didn’t make it home from the Moon and shares many other stories.
A healthy $26 billion has been proposed for NASA next year, but there are at least a couple of troubling factors we’ll discuss as Congress begins its review.
Leaders of the Neptune Odyssey study for the next planetary science and astrobiology decadal survey share their team’s exciting approach for an ice giant-orbiting spacecraft.
X-ray astronomy is vital to solving some of the universe’s biggest mysteries. Martin Weisskopf’s brand new space telescope has joined the effort.
A fascinating conversation with a space science and policy leader who is still hard at work in her 10th decade.
The Planetary Society’s new Science and Technology Empowered by the Public (STEP) grant program will let citizens join the search for ET and enable astronomers to discover the nature of hundreds of near-Earth asteroids.
Water may have flowed on Mars for a billion more years than was previously thought, giving possible life an extra billion years to thrive.
Casey talks with experts about the 50th anniversary of the Pioneer 10 launch toward Jupiter and beyond, and why most outer planets missions since then have been so costly.