Program Archives

A HOLE IN THE UNIVERSE
September 3, 2007
Guests: Lawrence Rudnick
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Lawrence Rudnick and two colleagues, all at the University of Minnesota, are publishing a paper about their discovery of a tremendous void in the cosmos, a billion light year-wide expanse that...  more »

DEEP IMPACT RETURNS FOR AN INTERPLANETARY THREE-FOR-ONE
July 9, 2007
Guests: Mike A'Hearn
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Deep Impact wowed the world with its explosive investigation of a comet two years ago. Now the spacecraft has been given a new mission that combines two very different tasks. We talk with then and...  more »

EXPLORING THE MYSTERY OF DARK MATTER WITH RICHARD MASSEY
May 21, 2007
Guests: Richard Massey
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How are we finding and even mapping dark matter when it can't be seen? CalTech's Richard Massey is one of the researchers who has learned how to map the mysterious material that dominates the...  more »

COSMOLOGY: FIVE BIG THINGS YOU NEED TO KNOW
April 9, 2007
Guests: Liz Kruesi
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Astrophysics grad student Liz Kruesi asked cosmologists for the questions they get asked by the public. She covers the five biggest in the new May edition of Astronomy magazine. From the Big Bang...  more »

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 »

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 »

SUPERNOVA: HOW TO BLOW UP A STAR
October 2, 2006
Guests: Thomas Janka
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Astrophysicists are beginning to build the mathematical models complex enough to explain how stars explode. We talk with Thomas Janka of the Max Planck Institute for Astrophysics in Germany. Emily...  more »

YOU CAN SEARCH FOR STARDUST!
August 7, 2006
Guests: Andrew Westphal
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UC Berkeley's Andrew Westphal returns to celebrate the public premiere of Stardust@home, the project that will allow you to search for...  more »

SOLVING COSMIC MYSTERIES DEEP UNDER THE EARTH
June 12, 2006
Guests: Art McDonald
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Art McDonald is Director of the Sudbury Neutrino Observatory, two kilometers deep in a nickel mine in northern Canada.  more »

HARVARD PHYSICIST LISA RANDALL ON HIDDEN DIMENSIONS AND NEW UNIVERSES TO EXPLORE
March 13, 2006
Guests: Lisa Randall
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Harvard physicist and author Lisa Randall talks about hidden dimensions and other universes.  more »