PODCASTS / Challenger Learning Center of Oklahoma City

Tale of the Tadpole Galaxy
Dr. Tom Jarrett discusses new images of the Tadpole galaxy from NASA's SWIRE mission, and what they may tell us about galaxy evolution and the future of the Milky Way.
(Running Time: 7:39)
October 27, 2005

Amazing Andromeda
Observations of our sister galaxy Andromeda reveal a new side to this Milky Way neighbor. Dr. Karl Gordon and Dr. George Rieke discuss Spitzer's fantastically detailed map of its dusty skeleton, previously hidden behind its veil of stars.
(Running Time: 7:16)
October 13, 2005

Cotton Candy Comets
Dr. Michelle Thaller discusses new insights into the nature of comets gained from observations by Spitzer and other observatories during the Deep Impact Mission.
(Running Time: 7:46)
October 6, 2005

What's a Big Galaxy Doing in the Baby Universe?
Astronomers unexpectedly discover that some very massive mature galaxies were already in place only one billion years after the Big Bang.
(Running Time: 5:55)
September 29, 2005

Do Planets Sprout Like Wildflowers?
New Spitzer evidence indicates that some gas giants may have grown in less than one million years, faster than previously believed.
(Running Time: 4:23)
September 15, 2005

Spitzer Turns Two
NASA's Spitzer Space Telescope celebrates its second anniversary of uncovering hidden universes of warm stellar embryos, chaotic planet-forming disks, and majestic galaxies.
(Running Time: 3:22)
September 1, 2005

Quasar? Ah, Sirrah!: Finding Hidden Black Holes
Dr. Mark Lacy discusses a population of giant black holes, or quasars, in distant galaxies that, until recent Spitzer observations, were hidden from astronomers behind massive clouds of dust.
(Running Time: 6:00)
August 16, 2005

Lin Yan Gives Us PAHs: Organic Molecules in the Early Universe
Dr. Lin Yan discusses her recent discovery of organic molecules called polycyclic aromatic hydrocarbons (or PAHs) in galaxies when our universe was one-fourth of its current age of about 14 billion years -- long before astronomers previously thought the building blocks of life could have formed.
(Running Time: 4:13)
August 3, 2005

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