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
Public Outreach and Amateurs in Space!
Longtime partner Ann Druyan is proud of NASA's new Carl Sagan Fellowships. Bill Nye has a tribute for his old professor.
Astropulse: A New Way for ET to Phone Home
Northrop Grumman Space Technology President Alexis Livanos
The Illustrated Guide to Astronomical Wonders
Ulysses Mission Operations Manager Nigel Angold on the End of the Solar Polar Journey
Jut Wynne in the Caves of the Atacama
Distinguished scientist David Morrison of NASA's Lunar Science Institute, while Jack Gregg heads speaks about the 2nd Lunar Regolith Challenge.
An exciting update from the Phoenix Mars Lander team, with further insights from Emily Lakdawalla. Bill Nye also celebrates Phoenix.
Observing Earth With Space Studies Board Chair Charles Kennel
Astonishing Mercury, With MESSENGER Principal Investigator Sean Solomon
Why We Need Missions to Earth
WALL*E and the Future of Robots in Space
William Hartmann on 100th Anniversary of Tunguska's Big Bang
The Milky Way: A New Galactic Self-Portrait
Ralph Lorenz and Titan Unveiled
JPL's Rob Manning explores just a few of the challenges of landing a spacecraft on another planet. We also get a Phoenix mission update from Emily Lakdawalla, who says not everything is going well.
Phoenix on Ice: One Week in the Martian Arctic Circle
Seven Minutes of Terror and Triumph: Phoenix Lands on Mars
Countdown to Touchdown on Mars