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1. The Black Hole Wars: My Battle with Stephen Hawking
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Black holes, the collapsed remnants of the largest stars, provide a remarkable laboratory where the frontier concepts of our understanding of nature are tested at their extreme limits. For more than two decades, Professor Leonard Susskind of Stanford University and a Dutch colleague have had a runni
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public date: Fri, 07 Nov 2008 14:10:04 -0800 - (11 MB Type: MPEG)
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2. The Allen Telescope Array: The Newest Pitchfork for Exploring the Cosmic Haystack
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Dr. Jill Tarter of the SETI Institute is the leader of the main project looking for radio signals from alien civilizations (she was also the model for the character Jodie Foster played in the movie "Contact.") She updates us on the latest tools and plans in this quest, as digital technologies make p
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public date: Thu, 19 Jun 2008 10:12:28 -0700 - (13 MB Type: MPEG)
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3. New Worlds and Yellowstone: How Common are Habitable Planets?
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Astronomers have now discovered more than 250 planets orbiting other stars. Hear the scientist who has discovered more planets than anyone else in the history of the world discuss what kinds of planets we have found so far, and what a new generation of telescopes might find in the future. Could dis
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public date: Sat, 05 Apr 2008 19:15:54 -0700 - (11 MB Type: MPEG)
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4. New Horizons at Jupiter (and Some Saturn News)
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In February, NASA's New Horizons spacecraft swung by the giant planet Jupiter on its way to Pluto. Its instruments recorded winderful images and other data about Jupiter's wild weather, its ring, and its giant moons. Dr. Jeff Moore, who was Leader of the Imaging Node for the encounter, shows the new
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public date: Tue, 11 Dec 2007 14:31:25 -0800 - (9 MB Type: MPEG)
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5. Taking a Hit: Asteroid Impacts and Evolution
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Asteroids have hit the Earth many time in the past, and they will continue to hit in the future, whether we are prepared or not. Collisions with our planet over 4.5 billion years have profoundly influenced the evolution of life. (In fact, were it not for the impact of a 15-km wide asteroid 65 millio
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public date: Tue, 11 Dec 2007 14:26:37 -0800 - (10 MB Type: MPEG)
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6. A Ringside Seat to the Formation of Planets
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Astronomers have discovered dusty "doughnuts" of cosmic raw material around many younger stars. In some cases, astronomers can see tantalizing hints in the rings that planets may be forming or may already have formed from this material. Dr. Dana Backman explains how new kinds of telescopes and obser
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public date: Tue, 11 Dec 2007 14:22:01 -0800 - (10 MB Type: MPEG)
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7. Comparing Worlds: Climate Catastrophes in the Solar System
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Take an entertaining and enlightening journey with astronomer and popular author Dr. David Grinspoon through the history of our solar system, discovering runaway greenhouses and snowball planets. Compare the evolution of Venus, Earth, and Mars over the years. And learn how studying the evolution of
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public date: Tue, 12 Jun 2007 09:25:04 -0700 - (12 MB Type: MPEG)
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8. The Mars Exploration Rover Mission: A Year of Exploration and Discovery
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Dr. Nathalie Cabrol is a planetary geologist who is a member of the Science Team for the Mars Exploration Rover mission. She specializes in exploring regions of Earth that resemble Mars (including Licancabur, the highest lake on our planet). She was instrumental in the selection of one of the lan
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public date: Fri, 01 Jun 2007 09:45:18 -0700 - (10 MB Type: MPEG)
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9. Estimating the Chances of Life Out There
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In 1961, Dr. Frank Drake (SETI Institute, University of California, Santa Cruz) proposed an intriguing method of estimating the number of intelligent life-forms out there that we might communicate with, now called the Drake Equation. In this talk, Dr. Drake provides a modern update on estimates for
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public date: Tue, 17 Apr 2007 13:06:49 -0700 - (9 MB Type: MPEG)
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10. A Scientist in Space/Searching for Earth-like Planets: NASA's Kepler Mission
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Dr. Janice Voss of NASA Ames Research Center, who has logged 49 days in space (traveling almost 19 million miles in 779 Earth orbits) discusses her work in space and what it's like flying on the Shuttle as a scientist. She then talks about NASA's upcoming Kepler mission, which will use a telescope i
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public date: Thu, 12 Apr 2007 20:12:15 -0700 - (9 MB Type: MPEG)
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11. Glimpsing the Edge of the Universe: Results from the Hubble Space Telescope
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The Hubble Space Telescope has circled the Earth 15 times every day for more than 16 years. Dr. Bruce Margon (University of California, Santa Cruz), who was until recently the Associate Director for Science for the Hubble, describes the most important discoveries made with the telescope and how it c
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public date: Wed, 28 Feb 2007 12:50:56 -0800 - (13 MB Type: MPEG)
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12. Dark Energy and the Runaway Universe
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In 1998, observations of very distant exploding stars provided intriguing evidence that the expansion of the Universe is speeding up with time, rather than slowing down due to gravity as expected. Today, new and completely independent observations strongly support this amazing conclusion. Over the l
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public date: Mon, 05 Feb 2007 14:00:21 -0800 - (13 MB Type: MPEG)
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13. The Planet Pluto: Maligned but Not Forgotten
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Dr. Dale Cruikshank reviews what we knew about Pluto (including its atmosphere, of which he was the co-discoverer), why Pluto was re-classified as a dwarf planet in the fall of 2006, and what the New Horizons spacecraft may reveal about this distant world in the next decade. Recorded November 8, 200
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public date: Thu, 18 Jan 2007 13:45:10 -0800 - (11 MB Type: MPEG)
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