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
Host Mat Kaplan greets the Orion capsule that has just returned from the Moon, and then presents some of the best of Planetary Radio’s 20 years.
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.
Water may have flowed on Mars for a billion more years than was previously thought, giving possible life an extra billion years to thrive.
Cassini mission project scientist Linda Spilker returns with new science from ocean moon Enceladus and anniversaries to celebrate with the Voyager mission.
When will we return to Uranus and Neptune? Planetary scientist Amy Simon explains why a mission to the so-called ice giants is a high priority as she tells us about these mysterious, blue worlds.
It is most space fans’ favorite planetary science mission, and with good reason. We visit with the man who has been in charge of Voyager mission science for more than four decades.
A new report builds the case for long overdue returns to Uranus and Neptune, while another proposal calls for exploration of the many bodies in our solar system that hide vast water oceans. Jason Callahan, Casey Dreier and Mat Kaplan dive into the troubled waters that determine which planetary science missions will get the limited funds available.
Asteroid Day, June 30th, marks the anniversary of the great Tunguska impact that leveled a Siberian forest. It reminds us that a Near Earth Object can destroy a city or even a civilization. Former Minor Planet Center Director Tim Spahr reviews our efforts to find and understand these bodies.
John Grunsfeld closes our coverage of the Space Foundation’s 32nd annual Space Symposium in Colorado Springs. We also meet the leaders of the New Generation Space Leaders Program.
They are the most neglected planets in our solar system, but that status may be changing. Planetary scientist Elizabeth “Zibi” Turtle celebrates NASA’s announcement that it will study a mission to Uranus or Neptune.
Landing on Mars is hard, and the bigger you are, the harder it gets. Rob Manning returns to tell us about one of NASA’s best hopes for getting much bigger spacecraft down there—spacecraft that may one day carry humans.
New Horizons passed through the orbit of Neptune on August 25th. By cosmic coincidence, this was the 25th anniversary of Voyager 2’s flyby of that big, blue world. We catch Principal Investigator Alan Stern right after a celebration in Washington.
The 44th Annual Meeting of the AAS Division of Planetary Sciences hosted hundreds of researchers and revealed volumes of scientific results. Join us at the conference.
Voyagers 1 and 2 just reached 35 years of travel in space. What a great reason to celebrate! Join Voyager Project Scientist Ed Stone, Ann Druyan, Emily Lakdawalla and Robert Picardo in this special live edition of our show. Bill Nye reports on a separate celebration in London and on the International Space Station, and Bruce Betts is back in fine form with Mat Kaplan for this week’s What’s Up.