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What is Podcasting?
Subscribe and automatically download fresh audio/video content: View content online by clicking the "View Podcast" links below (requires QuickTime 7.0 or other H.264-compliant video viewer. If videos do not play, right click or control click on the link to download the file to your hard drive & then open). Or, subscribe to the podcast using a program such as iTunes or ipodder with the podcast RSS/XML web address (listed below).
More Podcasts: [ High Def ] [ Standard Definition ] [ Touch the Invisible Sky ]
Video Podcast Listing (Archive)
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When Will History Repeat Itself?
(10-31-2007)
Astronomers think that a supernova should go off in our own Milky Way galaxy every 50 years or so. When was the last one we've seen? Probably 1604. Yes, that's over 400 years ago. This being astronomy however, things will undoubtedly average out over the long run, but in the meantime, we're left without a recent supernova in our Galaxy to study. Luckily for us, astronomers from previous centuries were on the case.
- View Video Podcast (36.2 MB, Runtime: 5:34)
- Listen to Audio Only
- Transcript
- Related Links:
-- Blasts From The Past: Historic Supernovas
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From First Light to Eighth Anniversary
(08-24-2007)
Chandra's launch aboard the Space Shuttle Columbia on July 23, 1999, was obviously a very important event. However, you might say it wasn't until about a month later that the Chandra mission really got started. In late August, after weeks of getting the spacecraft into the correct orbit and testing out various aspects of the satellite, Chandra was ready for its debut to the public. This was Chandra's First Light. Chandra's director, Dr. Harvey Tananbaum, explains the significance of that early image.
- View Video Podcast (29.6 MB, Runtime: 4:21)
- Listen to Audio Only
- Transcript
- Related Links:
-- Cassiopeia A
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How It All Started
(07-26-2007)
Just after midnight on July 23, 1999, the Space Shuttle Columbia launched in orbit with the heaviest payload ever carried by a shuttle. Its precious cargo was the Chandra X-ray Observatory, which has helped revolutionize our understanding of the Universe.
- View Video Podcast (30.8 MB, Runtime: 4:32)
- Listen to Audio Only
- Transcript
- Related Links:
-- STS-93 - Chandra Deployment Mission
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Mergers And Acquisitions In The Cosmos
(06-28-2007)
News about mergers is usually found in the business section. But many objects in the Universe, from black holes to clusters of galaxies, are also prone to mergers. Like the corporate world, cosmic mergers are dictated by where the most assets lie.
- View Video Podcast (39 MB, Runtime: 5:26)
- Listen to Audio Only
- Transcript
- Related Links:
-- Andromeda Galaxy (M31)
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The Bigger They Are, The Harder They Fall
(05-24-2007)
When you look at the night sky, stars look like permanent fixtures of light. However, stars are born, live for a period of time, and then ultimately die. How they die is directly linked to how massive they were when they were born.
- View Video Podcast (30.6 MB, Runtime: 4:32)
- Listen to Audio Only
- Transcript
- Related Links:
-- SN 2006gy
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The Exotic World of Neutron Stars
(04-30-2007)
Neutron stars are created when a massive star runs out of fuel and collapses. As the star collapses, the density becomes so immense that protons and electrons are squeezed tightly together to form neutrons. The end result is a star only 20 km across but weighing 1 1/2 times more than our sun and made up mostly of neutrons.
- View Video Podcast (29.8 MB, Runtime: 4:23)
- Listen to Audio Only
- Transcript
- Related Links:
-- Neutron Stars/X-ray Binaries
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The Giant Planets: X-ray Secrets Revealed
(03-19-2007)
Jupiter and Saturn are the two largest planets in our Solar System, best known for very different reasons. Most people think of Jupiter's famous Great Red Spot, while Saturn is, of course, most loved for those excellent rings. These two planets, however, offer much, much more for astronomers looking to learn more about our Solar System.
- View Video Podcast (28.7 MB, Runtime: 4:13)
- Listen to Audio Only
- Transcript
- Related Links:
-- They Might Be Giants: X-ray Secrets of Saturn and Jupiter
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Snowball Fight in the Solar System
(01-22-2007)
One of the most surprising objects observed in X-rays are comets. X-rays are normally associated with the hottest things in the Universe, such as black holes. Comets, however, were described by Fred Whipple as being "dirty snowballs". So how does a snowball make X-rays?
- View Video Podcast (26.6 MB, Runtime: 4:36)
- Listen to Audio Only
- Transcript
- Related Links:
-- Comet C/1999 S4 (LINEAR
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Please note: These podcasts include artist illustrations and conceptual animations in addition to astronomical data.
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