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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SETI Scientist Jill Tarter Continues the Search

The Director of the Center for SETI Research is thrilled to have the Allen Telescope Array back in the hunt for extraterrestrial intelligence. She also tells us about SETILive.

Discovery of a New and Neighborly Asteroid

With Planetary Society help, La Sagra Observatory discovered big near-Earth object 2012 DA14. Guest: Jaime Nomen.

James Webb Space Telescope Status Report from Deputy Program Director Eric Smith

James Webb Space Telescope Status Report from Deputy Program Director Eric Smith

Is Anybody Home? Assessing A Planet's Habitability

Is Anybody Home? Assessing A Planet's Habitability

Planetary Radio LIVE! With John Callas of the Mars Exploration Rovers and Joy Crisp of the Mars Science Laboratory

We once again go before a live audience for an all Mars rover show. We've also got singer KJ Williams, Bill Nye the Planetary Guy, and Emily Lakdawalla's proof that she is not covering up evidence of aliens in our solar system!

New Mexico Space Adventure: Back to the First International Planetary Caves Workshop

New Mexico Space Adventure: Back to the First International Planetary Caves Workshop

New Mexico Cave Adventure With Penny Boston and the First International Planetary Caves Workshop

New Mexico Cave Adventure With Penny Boston and the First International Planetary Caves Workshop

One Planet, Two Stars, With Laurance Doyle

Multidisciplinary scientist Laurance Doyle led the team that has announced discovery of the first extrasolar planet circling two stars. He also talks about his plan to analyze communication by and among other species.

An Optical SETI Update From Paul Horowitz

An Optical SETI Update From Paul Horowitz

LIFE Heads for Space Aboard Shuttle Endeavour

LIFE Heads for Space Aboard Shuttle Endeavour

Life's Building Blocks Found in an "Impossible" Meteorite

Life's Building Blocks Found in an Impossible

Rafael Navarro-Gonzalez and Chris McKay Say the Vikings Probably DID Discover Organics on Mars

Rafael Navarro-Gonzalez and Chris McKay Say the Vikings Probably DID Discover Organics on Mars

Arsenic and Odd Life

Arsenic and Odd Life

Gregory and James Benford on Benford Beacons for SETI

Gregory and James Benford on Benford Beacons for SETI

Special Coverage of SETIcon

Special Coverage of SETIcon

Talking With Mary Roach, Author of Packing for Mars

Talking With Mary Roach, Author of Packing for Mars

Looking for E.T.'s Laser Beam: An Optical SETI Update

An update on the Optical Search for Extraterrestrial Intelligence from Harvard's Paul Horowitz.

Paul Davies, Author of "The Eerie Silence"

Paul Davies, Author of

The Meaning of LIFE

The Meaning of LIFE

Mars Exploration Rover Project Manager John Callas

John Callas reports on Spirit and Opportunity, Bill Nye debates the future of humans on the Moon, and Bruce Betts looks to the Perseid meteor shower in his What's Up review of the night sky.

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