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STEVE OSTRO AND THE END OF RADAR ASTRONOMY?
January 1, 2007
Guests: Steve Ostro
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Our conversation with JPL scientist Steve Ostro continues as we learn about the proposed budget cuts that may end research at the two greatest radar astronomy instruments on Earth, Arecibo and...  more »

STRANGE INVADER: STEVE OSTRO EXAMINES NEAR EARTH ASTEROID KW4
December 25, 2006
Guests: Steve Ostro
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Steve Ostro is a radar astronomer at JPL. His modeling of near-Earth binary asteroid KW4 has revealed one of the weirdest objects ever found in our solar system. Emily Lakdawalla is taking pictures...  more »

KEN EDGETT, FIRST TO SEE NEWLY-FORMED CRATERS AND EVIDENCE OF FLOWING WATER ON MARS
December 18, 2006
Guests: Ken Edgett
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As a staff scientist for Malin Space Science Systems, Ken Edgett has viewed everyone of the more than 240,000 images returned by the Mars Global Surveyor. He was first to notice a black spot that...  more »

SPECIAL COVERAGE: LIQUID WATER AND NEW CRATERS DISCOVERED ON THE SURFACE OF MARS
December 11, 2006
Guests: Phil Christensen, Ken Edgett
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When we produced last week's tribute to the Mars Global Surveyor we had no idea its two biggest discoveries were about to be announced! You'll hear about them from Ken Edgett and Mike Malin of Malin...  more »

A SALUTE TO THE MARS GLOBAL SURVEYOR WITH PHIL CHRISTENSEN
December 4, 2006
Guests: Phil Christensen
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Mars Global Surveyor is gone but not forgotten. Principal Investigator Phil Christensen examines the stunning legacy of a ten-year mission that mapped all of the Red Planet and found evidence of...  more »

HUMANS, ROBOTS, AND 21ST CENTURY SPACE EXPLORATION
November 27, 2006
Guests: Jeff Hoffman, Tom Jones, John Young
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Special coverage of a public forum in Houston, Texas, co-sponsored by the Association of Space Explorers, the Lunar and Planetary Institute, and The Planetary Society. Panelists include astronauts...  more »

THE SOLAR SAIL AND A RUSSIAN SPACE UPDATE FROM SLAVA LINKIN
November 20, 2006
Guests: Slava Linkin
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Slava Linkin of the Russian Federation's Space Research Institute has finally returned to the United States for meetings about the next launch of The Planetary Society's Solar Sail. He talks to us...  more »

THE HUBBLE SPACE TELESCOPE REBORN
November 13, 2006
Guests: Mario Livio
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The announcement that a space shuttle crew will be sent to repair and upgrade the Hubble Space Telescope has been greeted by astronomers with joy. One of them is Mario Livio of the Space Telescope...  more »

THE SPIRITUALITY OF SCIENCE: ANN DRUYAN ON A NEW COLLECTION OF CARL SAGAN LECTURES
November 6, 2006
Guests: Ann Druyan
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Though he passed away 10 years ago, new works by planetary scientist and science communicator Carl Sagan continue to appear. His widow and longtime collaborator, Ann Druyan, has edited a series of...  more »

SCIENCE VS. EXPLORATION? ROBOTS VS. HUMANS?
October 30, 2006
Guests: Buzz Aldrin, Jim Bell, Chris McKay, Louis Friedman
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The recent meeting of the American Astronomical Society's Division for Planetary Sciences also saw a public event sponsored by the Planetary Society. Hear highlights of a dramatic discussion of some...  more »