http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/index.html Real NASA astronomers answer questions about the exciting science of astronomy. NASA's Spitzer Science Center and Infrared Processing and Analysis Center Brought to You by NASA's Spitzer Science Center (SSC) and the Infrared Processing and Analysis Center (IPAC) Real NASA astronomers answer questions about the exciting science of astronomy. en-us ℗ & © 2002-2008 NASA. Commercial use prohibited. All other users must give proper credit. NASA / SSC-IPAC outreach@ipac.caltech.edu no astronomy, ask, astronomer, ask an astronomer, spitzer space telescope, ipac, science, physics, NASA, NASA's, infrared astronomy Visit the W-5 star-forming region with Ask an Astronomer! http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/whatisit01.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Visit the W-5 star-forming region with Ask an Astronomer! Visit the W-5 star-forming region with Ask an Astronomer! whatisit01 Thu, 05 Feb 2009 14:07:00 PST 2:08 astronomy, image, picture Dr. Carolyn Brinkworth fills us in on what the color of the sky has to do with finding life on distant planets. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2008-007.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Carolyn Brinkworth fills us in on what the color of the sky has to do with finding life on distant planets. Dr. Carolyn Brinkworth fills us in on what the color of the sky has to do with finding life on distant planets. 2008-007 Mon, 22 Dec 2008 16:11:00 PST 3:05 astronomy, absorption, astrobiology, light, atmosphere, scattering, sky Dr. Michelle Thaller explains how there can be an interstellar medium in a vacuum. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2008-006.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Michelle Thaller explains how there can be an interstellar medium in a vacuum. Dr. Michelle Thaller explains how there can be an interstellar medium in a vacuum. 2008-006 Thu, 23 Oct 2008 13:55:00 PDT 2:30 astronomy, star, stars, interstellar medium, vacuum On the Spitzer Space Telescope's fifth anniversary, we look back at a few of its most remarkable discoveries. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/spitzer_fifth_anniversary.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center On the Spitzer Space Telescope's fifth anniversary, we look back at a few of its most remarkable discoveries. On the Spitzer Space Telescope's fifth anniversary, we look back at a few of its most remarkable discoveries. 5th Mon, 25 Aug 2008 10:00:00 PDT 2:15 infrared, Spitzer, Spitzer Space Telescope, astronomy, discoveries, anniversary, birthday Our Sun won't last forever. Dr. Carolyn Brinkworth explains the ramifications for our home planet. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2008-005.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Our Sun won't last forever. Dr. Carolyn Brinkworth explains the ramifications for our home planet. Our Sun won't last forever. Dr. Carolyn Brinkworth explains the ramifications for our home planet. 2008-005 Tue, 01 Jul 2008 09:20:00 PDT 3:58 astronomy, doom and gloom, earth, sun, red giant, nova, planetary nebula, destruction Dr. Carolyn Brinkworth examines whether science fiction could be science fact. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2008-004.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Carolyn Brinkworth examines whether science fiction could be science fact. Dr. Carolyn Brinkworth examines whether science fiction could be science fact. 2008-004 Thu, 08 May 2008 10:00:00 PDT 3:30 astronomy, binary, binaries, binary star, double sun, planet, exoplanet, extrasolar planet, Tatooine, Star Wars Dr. Varoujan Gorjian fills us in on the end of a galaxy. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2008-003.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Varoujan Gorjian fills us in on the end of a galaxy. Dr. Varoujan Gorjian fills us in on the end of a galaxy. 2008-003 Thu, 10 Apr 2008 09:40:00 PDT 2:07 astronomy, galaxy, galaxies, collision, disaster, doom and gloom, black hole, white dwarf, pulsar, neutron star, supernova Dr. Michelle Thaller explains why some stars appear red or blue, but not green. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2008-002.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Michelle Thaller explains why some stars appear red or blue, but not green. Dr. Michelle Thaller explains why some stars appear red or blue, but not green. 2008-002 Thu, 13 Mar 2008 14:25:00 PDT 3:17 astronomy, star, stars, color perception Dr. Bidushi Bhattacharya helps us understand how astronomers find these tiny space rocks. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2008-001.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Bidushi Bhattacharya helps us understand how astronomers find these tiny space rocks. Dr. Bidushi Bhattacharya helps us understand how astronomers find these tiny space rocks. 2008-001 Wed, 13 Feb 2008 11:04:00 PST 2:04 astronomy, asteroid, asteroids Dr. Michelle Thaller explains infrared light in this classic video. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/IR_Video_4AaA.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Michelle Thaller explains infrared light in this classic video. Dr. Michelle Thaller explains infrared light in this classic video. IRvideo Tue, 18 Dec 2007 13:30:00 PST 6:58 infrared, zoo, animal, animals, electromagentism, EM spectrum, astronomy, science, physical science, physics What makes the Earth livable? In this special animated cartoon, innocent alien M51 moves the Earth into a closer orbit around the sun, and learns an important lesson about life in the Universe. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/m51.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center What makes the Earth livable? In this special animated cartoon, innocent alien M51 moves the Earth into a closer orbit around the sun, and learns an important lesson about life in the Universe. What makes the Earth livable? In this special animated cartoon, innocent alien M51 moves the Earth into a closer orbit around the sun, and learns an important lesson about life in the Universe. M51 Mon, 05 Nov 2007 11:45:00 PST 4:27 astronomy, doom and gloom, habitable zone, cartoon, animation, comedy, funny Dr. Varoujan Gorjian takes us inside interacting galaxies. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2007-002_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Varoujan Gorjian takes us inside interacting galaxies. Dr. Varoujan Gorjian takes us inside interacting galaxies. 2007-002 Fri, 14 Sep 2007 11:45:00 PDT 1:55 astronomy, galaxy, galaxies, Andromeda, Andromeda Galaxy, collision, mice, tidal disruption, tides, disaster, doom and gloom Dr. Michelle Thaller takes us into the murky answer to this not-so-simple question. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2007-001_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Michelle Thaller's answer may surprise you! Dr. Michelle Thaller takes us into the murky answer to this not-so-simple question. 2007-001 Fri, 27 Jul 2007 14:15:00 PDT 2:34 astronomy, galaxy, galaxies, Andromeda, Andromeda Galaxy, Magellanic Clouds, Large Magellanic Cloud, Small Magellanic Cloud, Sagittarius Dwarf, Canis Major Dwarf, Canis Majoris Dwarf Dr. Robert Hurt explains why Pluto got... well... plutoed. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2006-003_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Robert Hurt explains why Pluto got... well... plutoed. Dr. Robert Hurt explains why Pluto got... well... plutoed. 2006-003 Mon, 12 Feb 2007 16:15:00 PDT 3:31 astronomy, planet, planets, Pluto, asteroids, Ceres, Eris, Juno, Pallas, solar system, IAU, ask, astronomer, Quaoar, Sedna If no light can escape from a black hole, how do we see them? Dr. Tom Jarrett answers. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2006-002_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Tom Jarrett explains how we see something that lets no light escape. If no light can escape from a black hole, how do we see them? Dr. Tom Jarrett answers. 2006-002 Thu, 24 Aug 2006 16:20:00 PDT 2:31 astronomy, black holes, black hole Dr. Tom Jarrett helps us understand this difficult scientific concept using a biplane, a flying saucer, and a cow. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2006-001_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Tom Jarrett helps us understand this difficult concept. Dr. Tom Jarrett helps us understand this difficult scientific concept using a biplane, a flying saucer, and a cow. 2006-001 Wed, 24 May 2006 15:30:00 PDT 2:28 astronomy, galaxy, galaxies, redshift, physics, cows Dr. Steve Lord explains that the stars do move, but not in the way they appear to. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2005-002_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Steve Lord lets us in on the surprisingly complicated world of stellar motion. Dr. Steve Lord explains that the stars do move, but not in the way they appear to. 2005-002 Fri, 9 Dec 2005 18:00:00 PDT 2:52 astronomy, ask, astronomer, stars, constellations, history, ptolemy, hipparchus, halley, copernicus, proper motion Dr. Steve Lord describes the processes that cause us to see spiral arms. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2005-001_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Steve Lord explains the structure of spiral galaxies. Dr. Steve Lord describes the processes that cause us to see spiral arms. 2005-001 Tue, 25 Oct 2005 15:00:00 PDT 1:54 astronomy, ask, astronomer, stars, galaxies, spiral arms, galaxy, star Dr. Davy Kirkpatrick explains the weird and wonderful solar systems we know about. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2003-005_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Davy Kirkpatrick shows us other solar systems. Dr. Davy Kirkpatrick explains the weird and wonderful solar systems we know about. 2003-005 Fri, 14 Oct 2005 16:00:00 PDT 2:01 astronomy, ask, astronomer, extrasolar planets, solar systems Dr. Davy Kirkpatrick discusses extrasolar planets. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2003-004_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Davy Kirkpatrick discusses extrasolar planets. Dr. Davy Kirkpatrick discusses extrasolar planets. 2003-004 Fri, 14 Oct 2005 16:00:00 PDT 2:08 astronomy, ask, astronomer, extrasolar planets, solar systems Dr. Davy Kirkpatrick explains the nature of one of the most unusual objects in space. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2003-003_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Davy Kirkpatrick explains one of the strangest objects in space. Dr. Davy Kirkpatrick explains the nature of one of the most unusual objects in space. 2003-003 Fri, 14 Oct 2005 16:00:00 PDT 2:17 astronomy, ask,, astronomer, stars, planets, brown dwarf, brown dwarves, brown dwarfs Dr. Michelle Thaller explains the life cycle of stars. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2003-002_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Michelle Thaller explains the life cycle of stars. Dr. Michelle Thaller explains the life cycle of stars. 2003-002 Fri, 14 Oct 2005 16:00:00 PDT 2:25 astronomy, ask, astronomer, stars, stellar evolution, white dwarf, neutron star, black hole Dr. Michelle Thaller explains the color scheme of the Spitzer Space Telescope. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2003-001_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Michelle Thaller explains the advantages of Spitzer's unique paint job. Dr. Michelle Thaller explains the color scheme of the Spitzer Space Telescope. 2003-001 Fri, 14 Oct 2005 16:00:00 PDT 1:34 astronomy, ask, astronomer, SIRTF, Spitzer, thermal radiation, infrared astronomy, space telescope, Spitzer Space Telescope Dr. Susan Stolovy answers the question of why only certain regions can see a solar eclipse. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2002-005_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Susan Stolovy explains solar eclipses. Dr. Susan Stolovy answers the question of why only certain regions can see a solar eclipse. 2002-005 Fri, 14 Oct 2005 16:00:00 PDT 2:25 astronomy, ask, astronomer, sun, solar eclipse, moon, eclipses Doris Daou explains what causes eclipses. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2002-004_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Doris Daou explains lunar eclipses. Doris Daou explains what causes eclipses. 2002-004 Fri, 14 Oct 2005 16:00:00 PDT 2:05 astronomy, ask, astronomer, sun, lunar eclipse, moon, eclipses Doris Daou answers a question about the phases of the moon. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2002-003_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Doris Daou talks about the phases of the moon and more. Doris Daou answers a question about the phases of the moon. 2002-003 Fri, 14 Oct 2005 16:00:00 PDT 2:10 astronomy, ask, astronomer, lunar cycle, phases of the moon Dr. Robert Hurt answers a question about solar physics. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2002-002_podcast.m4v NASA's Spitzer Science Center and Infrared Processing and Analysis Center Dr. Robert Hurt explains what solar winds are. Dr. Robert Hurt answers a question about solar physics. 2002-002 Fri, 14 Oct 2005 16:00:00 PDT 1:50 astronomy, ask, astronomer, solar wind Doris Daou answers a question about gravity and orbits. http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ask_astronomer/video/podcast/2002-001_podcast.m4v Doris Daou explains orbits. Ask an Astronomer, brought to you by NASA Doris Daou answers a question about gravity and orbits. 2002-001 Fri, 14 Oct 2005 16:00:00 PDT 1:50 astronomy, ask, astronomer, gravity, orbits, orbital mechanics, moon, earth, collision