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 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.

Running Before the Sun: Astronomer Jay Pasachoff

No one is more excited about eclipses than famed solar astronomer and author Jay Pasachoff. He looks forward to the total solar eclipse in August of 2017.

Leading the Search: Bill Diamond of the SETI Institute

The SETI Institute is about much more than the Search for Extraterrestrial Intelligence. President and CEO Bill Diamond of the Institute explains.

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.

Inside Virgin Galactic’s SpaceShipTwo

Host Mat Kaplan traveled to California’s Mojave Desert for a tour of Virgin Galactic’s The Spaceship Company, where the second SpaceShipTwo was built and is undergoing flight tests. TSC Executive VP Enrico Palermo was his guide.

Matt Taylor Rocks Rosetta

Mat Kaplan talks with Matt Taylor, the Rosetta Project Scientist, just two weeks after the spacecraft touched down on 67/P.

Alan Stern and a Triumph at Pluto

Alan Stern of the New Horizons mission to Pluto and beyond was in Pasadena for the annual meeting of the American Astronomical Society’s Division for Planetary Sciences. He joined Mat Kaplan for a very special conversation down the street at Planetary Society HQ.

Charley Kohlhase and the Greatest Voyage

How did the Voyager spacecraft manage to weave their magnificent way through the outer planets of our solar system? Mission Design Manager Charley Kohlhase led the team that crunched the numbers to select the best possible trajectory from 10,000 candidates.

Trekkin’ Across the Universe With Andrew Fazekas

The Night Sky Guy, Andrew Fazekas, talks about his beautiful new, Star Trek-inspired guide to the real wonders of astronomy.

Farewell Rosetta!

The European Space Agency’s magnificent Rosetta mission ended last week as the spacecraft gently touched down on the comet it has revealed.

Rocket Road Trip!

Planetary Society Digital Editor Jason Davis returns with the story of the ten-day trek across the South he just completed with two Society colleagues.

OSIRIS-REx: The Voyage to Bennu Begins, With Dante Lauretta

In two years a Near Earth Asteroid now known as Bennu will have a visitor from Earth. OSIRIS-REx Principal Investigator Dante Lauretta reports on his mission’s successful launch.

Spinoffs! Sharing NASA Technology

In its nearly five decades, NASA has created or improved thousands of technologies, processes and innovations. Dan Lockney is in charge of making sure these solutions are found and utilized by industries and others in need.

Could the Soviet Union Have Won the Space Race?

Space historian and policy expert John Logsdon joins Mat Kaplan for a fascinating conversation about how the US could have lost the race to the moon.

Sailing the Canyons of Titan

Steep canyons on Saturn's moon Titan are filled with liquid methane. That's the discovery just announced by an international team of Cassini scientists, including Alex Hayes.

Subcontractors: Making Space Happen

You may never hear their names, but there are thousands of small to medium-sized companies without which space exploration and development wouldn’t happen.

Interstellar Dreams Turn Real

Philip Lubin and his former student Travis Brashears have had quite a year. Their bold plan to send tiny probes to nearby stars is now supported by NASA and the Breakthrough Starshot $100 million dollar initiative. Hear their amazing story.

Anatomy of a Rover—Getting Down to Mars

It takes a lot of terrific components to create a successful spacecraft like Curiosity, the Mars Science Laboratory. We’ll visit JPL to learn about the Terminal Descent Sensor radar that will once again help land a rover on the Red Planet.

Juno Reaches Jupiter!

Return with us to the evening of July 4, 2016 and the exciting arrival at Jupiter of the Juno orbiter. You’ll hear the moment of successful orbital insertion. Several of the mission’s key contributors reveal how Juno accomplished this feat, along with what they hope the spacecraft will tell us about the giant planet.

Countdown to Jupiter

Juno will enter Jupiter orbit on July 4th. Mat Kaplan talks with the mission’s Principal Investigator, Scott Bolton at the Jet Propulsion Laboratory. Bill Nye helps prepare us for this exciting encounter and the science that will follow.

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