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.

Ulysses Mission Operations Manager Nigel Angold on the End of the Solar Polar Journey

Ulysses Mission Operations Manager Nigel Angold on the End of the Solar Polar Journey

Jut Wynne in the Caves of the Atacama

Jut Wynne in the Caves of the Atacama

David Morrison of NASA's Lunar Science Institute and Jack Gregg on the Lunar Regolith Challenge

Distinguished scientist David Morrison of NASA's Lunar Science Institute, while Jack Gregg heads speaks about the 2nd Lunar Regolith Challenge.

Phoenix Mars Lander Update: Taste the Water!

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

Observing Earth With Space Studies Board Chair Charles Kennel

Astonishing Mercury, With MESSENGER Principal Investigator Sean Solomon

Astonishing Mercury, With MESSENGER Principal Investigator Sean Solomon

Why We Need Missions to Earth

Why We Need Missions to Earth

WALL*E and the Future of Robots in Space

WALL*E and the Future of Robots in Space

William Hartmann on 100th Anniversary of Tunguska's Big Bang

William Hartmann on 100th Anniversary of Tunguska's Big Bang

The Milky Way: A New Galactic Self-Portrait

The Milky Way: A New Galactic Self-Portrait

Ralph Lorenz and Titan Unveiled

Ralph Lorenz and Titan Unveiled

Landing on Mars: How Hard Can It Be?

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

Phoenix on Ice: One Week in the Martian Arctic Circle

Seven Minutes of Terror and Triumph: Phoenix Lands on Mars

Seven Minutes of Terror and Triumph: Phoenix Lands on Mars

Countdown to Touchdown on Mars

Countdown to Touchdown on Mars

XCOR's Lynx: Another Ride Into Space

XCOR's Lynx: Another Ride Into Space

Turning Moondust Into Air and Water

Turning Moondust Into Air and Water

The Brightest Light in the Universe

The Brightest Light in the Universe

Billions and Billions of Earthlike Planets?

Billions and Billions of Earthlike Planets?

A Mars Rover Update From Steve Squyres

Steve Squyres gives us a status report on Spirit and Opportunity, and Bill Nye comments on the rings that appear to surround one of Saturn's small moons. Last week Emily Lakdawalla told us why objects in space are round, but this time her Q&A explains why they're not.

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