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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Celebrating the MESSENGER Mercury Flyby With Sean Solomon

Celebrating the MESSENGER Mercury Flyby With Sean Solomon

Astronaut Clay Anderson: Staying In Shape In Space

Astronaut Clay Anderson: Staying In Shape In Space

Examining the Vision for Space Exploration: A Workshop Preview

Examining the Vision for Space Exploration: A Workshop Preview

MESSENGER Reveals Mercury

MESSENGER Reveals Mercury

A Near Miss for Mars and Bill Nye Pays Tribute to Mercury!

A Near Miss for Mars and Bill Nye Pays Tribute to Mercury!

A Winged MESSENGER Reaches Mercury, and Bill Nye Premieres!

A Winged MESSENGER Reaches Mercury, and Bill Nye Premieres!

A Very Good Year: Looking Back at 2007

A Very Good Year: Looking Back at 2007

Ion Engines Drive Dawn to Asteroids Vesta and Ceres

Ion Engines Drive Dawn to Asteroids Vesta and Ceres

Observing Earth: Annmarie Eldering's Eye On Our Atmosphere

Observing Earth: Annmarie Eldering's Eye On Our Atmosphere

A New Generation Looking for ET

A New Generation Looking for ET

Stardust@Home Update from Andrew Westphal

Stardust@Home Update from Andrew Westphal

Planetary Radio 5th Anniversary Show: Astronomer Geoff Marcy on Discovery of Fifth Planet in Star System

We celebrate our 5th anniversary by learning about discovery of a five-planet star system, the largest found so far. Q&A on Jupiter's red spot.

Mars Exploration Rover Program Manager John Callas

John Callas provides a status report on Spirit and Opportunity. Emily Lakdawalla is looking at brilliant Comet Holmes in her Q&A report, and Bruce Betts also makes room for Holmes in his What's Up! review of the night sky.

To Phobos and Back

To Phobos and Back

Building the J-2X Rocket Engine for the Return to the Moon

Building the J-2X Rocket Engine for the Return to the Moon

The Universe in Ultraviolet: Bill Blair on the FUSE Mission

The Universe in Ultraviolet: Bill Blair on the FUSE Mission

Mark Showalter: Unraveling the Mysteries of Planetary Rings

Mark Showalter: Unraveling the Mysteries of Planetary Rings

Space Elevator Games and Serious Planetary Science

Space Elevator Games and Serious Planetary Science

Celebrating Sputnik With Louis Friedman in Moscow

Celebrating Sputnik With Louis Friedman in Moscow

Homer Hickam, the Original Rocket Boy, Revisits His October Sky

Homer Hickam, the Original Rocket Boy, Revisits His October Sky

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