Planetary Radio Episodes

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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A Comet’s Legacy, and a Helicopter is Ready for Mars

First we return to JPL for an update on the Mars Helicopter that has just been attached to the belly of the 2020 Mars Rover. Then it’s across the pond for a review of the amazing science coming from the Rosetta mission that spent years exploring comet 67P/Churyumov-Gerasimenko. We wrap things up with another What’s Up view across the solar system and beyond.

A Fond Farewell to Spirit and Opportunity

The Mars Exploration Rover mission was declared complete on February 13, 2019. On the very next day, MER Project Manager John Callas and Deputy Project Scientist Abigail Fraeman came to Planetary Society headquarters for an extended and emotional conversation with Mat Kaplan and Emily Lakdawalla.

A Great Day for Space Explorers: The Landing of InSight

Join 1,000 anxious yet thrilled space fans at Caltech for our live InSight landing party. You’ll meet Mat Kaplan’s onstage experts and check in with Bill Nye and Emily Lakdawalla at the Jet Propulsion Lab.

We Know Where the 2020 Rover Will Look for Martian Life

NASA announced on November 19th that the multi-billion dollar 2020 Mars rover will land in Jezero crater, where it will begin the search for the signature of past life.

Opportunity, Phone Home!

The dust is settling on the Red Planet. Is the remaining Mars Exploration Rover about to rise and shine after three months of slumber? MER Project Manager John Callas returns with a realistic yet hopeful assessment.

Diving Into That Lake on Mars

Our world was rocked by last week’s announcement of good radar evidence for a liquid water “lake” under the Red Planet’s south pole. Senior Editor Emily Lakdawalla introduces us to the story that is then taken up by two of host Mat Kaplan’s favorite Martians. The Goddard Space Flight Center’s James Garvin headed NASA’s Mars exploration program, while NASA Ames astrobiologist Chris McKay co-founded the Mars Underground more than 35 years ago.

All Shook Up: The InSight Mission to Mars

No mission to Mars has done what InSight will do. The lander’s spectacularly sensitive instruments will use the Red Planet’s heat and marsquakes to reveal its deep interior while also revealing secrets of other rocky worlds like our own Earth.

The Eyes of a New Mars Rover: Mastcam-Z

Mat Kaplan attended a meeting of the science team for the zoom lens camera that will be atop the Mars 2020 rover mast. Planetary Scientist Jim Bell tells us how this new system will show us the Red Planet as we’ve never seen it before.

Mysterious Tabby’s Star, With Tabby Herself

It may not host an alien “megastructure” but Tabby’s Star still guards many mysteries of science. Astronomer and astrophysicist Tabetha “Tabby” Boyajian leads the worldwide team that is revealing this strange light in the sky.

Flowing Water on Mars? Not So Much

Mars scientists dubbed them recurring slope lineae or RSLs. They sure looked like evidence of liquid water flowing down hillsides and ridges on the Red Planet. New research led by USGS Planetary Geologist Colin Dundas says otherwise.

20 Years on Mars with Matt Golombek

When the Pathfinder lander reached Mars 20 years ago it began a Martian renaissance that has never paused. JPL scientist Matt Golombek was the mission’s Project Scientist. He looks back and to the future of our explorations at the Red Planet.

Thomas Edison, Eclipse Chaser!

Former NPR science reporter David Baron discusses the stories of men and women who made their way across the American West to view and document the total solar eclipse of 1878.

Visiting Worlds Fantastic with Bonnie Buratti

Veteran Jet Propulsion Lab planetary scientist Bonnie Buratti talks with Mat about the wonder of our solar neighborhood that she explores in

Mars’ Atmosphere: Lost in Space!

Mars was once a warm and wet world. Then its dense, protective atmosphere mostly vanished. Learning why was one of the greatest mysteries in planetary science. The answer has just been delivered by the MAVEN orbiter.

A Little Rocket Company Shoots for the Moon

CEO Randa Milliron introduces us to Interorbital Systems, which wants to put your payload in orbit for as little as $8,000. Can they do it?

Marvelous Martian MAVEN

MAVEN, the Mars Atmosphere and Volatile Evolution orbiter, has gone a long way toward solving the mystery of the Red Planet’s missing water and air. The University of Colorado’s Nick Schneider says it is also revealing gorgeous clouds, auroras and glowing skies.

Art That Captures the Beauty and Science of Space

Marilynn Flynn, Simon Kregar and Rick Sternbach are masters of space art. They talk about how their work furthers science and captures the imagination.

A Giant Telescope and Remembering John Glenn

Space historian John Logsdon remembers American hero John Glenn. Planetary Society CEO Bill Nye was a big fan of the Friendship 7 astronaut—less so the new Star Wars movie. Then we get an update on the Giant Magellan Telescope from Patrick McCarthy.

To Mars! With National Geographic

The National Geographic Channel’s “Mars” miniseries has begun. Mat Kaplan attended a kickoff for the ambitious docudrama last summer. You’ll hear from series technical advisor Bobby Braun, author of “The Martian” Andy Weir, Cosmos creator Ann Druyan and more.

Pluto and Titan and Iran, Oh My!

Back to the annual meeting of the AAS Division for Planetary Sciences this week, where Mat Kaplan visited with experts on worlds of ice including Titan and Pluto, with a side trip to the dunes of Iran.

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