Ask an Astronomer Video Podcast
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Real NASA astronomers answer questions about the exciting science of astronomy. Brought to You by NASA's Spitzer Science Center (SSC) and the Infrared Processing and Analysis Center (IPAC).
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Podcast Website:
http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/index.html
Where Is the Center of the Universe?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Wed, Aug 26, 2009
Dr. Varoujan Gorjian explains the mind-boggling expansion of the Universe.
 Download File - 21.0 MB
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W-5 Star-Forming Region
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Thu, Feb 05, 2009
Visit the W-5 star-forming region with 'Ask an Astronomer'!
Download File - 16.7 MB
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Why Is the Sky Blue?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Mon, Dec 22, 2008
In this 'Ask an Astronomer' episode, Dr. Carolyn Brinkworth fills us in on what the color of the sky has to do with finding life on distant planets.
Download File - 20.8 MB
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What's Between the Stars?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Thu, Oct 23, 2008
In this 'Ask an Astronomer' episode, Dr. Michelle Thaller explains how there can be an interstellar medium in a vacuum.
Download File - 20.4 MB
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Spitzer's Fifth Anniversary
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Mon, Aug 25, 2008
This 'Ask an Astronomer' special looks at some of the biggest discoveries from NASA's Spitzer Space Telescope over the last five years.
Download File - 18.0 MB
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What Will Happen to the Earth When the Sun Dies?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Tue, Jul 01, 2008
Our Sun won't last forever. Dr. Carolyn Brinkworth explains the ramifications for our home planet in this 'Ask an Astronomer' video.
Download File - 32.7 MB
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Can a Planet Have Two Suns?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Thu, May 08, 2008
Dr. Carolyn Brinkworth addresses a famous science fiction scenario in this 'Ask an Astronomer' video.
Download File - 27.3 MB
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Can a Galaxy Die?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Thu, Apr 10, 2008
Dr. Varoujan Gorjian gives us the answer to this 'Ask an Astronomer' question.
Download File - 17.3 MB
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Why Aren't There Any Green Stars?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Thu, Mar 13, 2008
Dr. Michelle Thaller answers this question for 'Ask an Astronomer.'
Download File - 23.4 MB
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How Do You Discover an Asteroid?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Wed, Feb 13, 2008
Dr. Bidushi Bhattacharya helps us understand how astronomers find these tiny space rocks.
Download File - 14.3 MB
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Infrared: More Than Your Eyes Can See
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Tue, Dec 18, 2007
Dr. Michelle Thaller explains infrared light in this older video, produced by NASA's Spitzer Space Telescope (then known as the Space Infrared Telescope Facility) before it launched.
Download File - 51.7 MB
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M51 and Gizmo
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Mon, Nov 05, 2007
In this animated 'Ask an Astronomer' special, innocent alien M51 moves the Earth into a closer orbit around the sun, and learns an important lesson about life in the Universe.
Download File - 36.3 MB
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What Happens When Galaxies Collide?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Sep 14, 2007
Dr. Varoujan Gorjian takes us inside galactic collisions in this 'Ask an Astronomer' video.
Download File - 15.1 MB
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What Is the Nearest Galaxy to the Milky Way?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Jul 27, 2007
Dr. Michelle Thaller explains that the answer isn't as simple as you might think!
Download File - 18.2 MB
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Why Isn't Pluto a Planet Any More?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Mon, Feb 12, 2007
Dr. Robert Hurt explains why Pluto got... well... plutoed.
Download File - 28.8 MB
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How Can We See a Black Hole?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Thu, Aug 24, 2006
If no light escapes from a black hole, how can we detect them? 'Ask an Astronomer' explains.
Download File - 18.9 MB
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What Is a Redshift?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Wed, May 24, 2006
'Ask an Astronomer' uses an astronomer, a flying saucer, and a cow to help explain this difficult astronomical concept in simple terms.
Download File - 19.9 MB
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Do the Stars Really Move?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Dec 09, 2005
The answer to this 'Ask an Astronomer' question may surprise you!
Download File - 22.8 MB
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Why Do We See Spiral Arms in Some Galaxies?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Tue, Oct 25, 2005
'Ask an Astronomer' explains the morphology of one of the most common types of galaxy.
Download File - 15.1 MB
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What Is a Brown Dwarf?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
'Ask an Astronomer' explains one of the strangest objects in outer space.
Download File - 16.0 MB
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Do Other Solar Systems Exist?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
'Ask an Astronomer' explains how we detect planets around other stars.
Download File - 16.9 MB
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Are Other Solar Systems Like Our Own?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
Solar systems come in a large variety of flavors, as this 'Ask an Astronomer' video shows.
Download File - 14.0 MB
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How Do Stars Live and Die?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
'Ask an Astronomer' tackles stellar evolution.
Download File - 18.9 MB
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Why Is Spitzer Painted Black?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
The Spitzer Space Telescope has a funny paint job. This 'Ask an Astronomer' segment explains why.
Download File - 12.4 MB
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Why Are Solar Eclipses Only Visible in Some Parts of the World?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
This 'Ask an Astronomer' episode explains eclipses of the sun and why they can't be seen everywhere.
Download File - 12.8 MB
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What Causes an Eclipse of the Moon?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
This 'Ask an Astronomer' episode explains lunar eclipses.
Download File - 15.5 MB
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Why Does the Moon Look Like It Changes?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
Phases of the Moon are clearly explained in this 'Ask an Astronomer' episode.
Download File - 17.4 MB
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Can You Feel a Solar Wind?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
This 'Ask an Astronomer' segment attempts to explain what a solar wind is (and is not).
Download File - 14.6 MB
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Why Doesn't the Moon Fall Down?
Author: NASA's Spitzer Science Center and Infrared Processing and Analysis Center
Fri, Oct 14, 2005
This 'Ask an Astronomer' episode explains how orbits work.
Download File - 12.2 MB
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Science
Astronomy
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This Publisher: NASA
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