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galactic disk |
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galactic disk [gə′lak·tik ′disk] (astronomy) The flat distribution of stars and interstellar matter in the spiral arms and plane of the Milky Way Galaxy. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Galactic disks arise several billion years after halos do. Because of the remnant's outgoing motion, theorists have proposed that the star that became Kepler's supernova was, in fact, born in the galactic disk with a partner star. should provide many new, interesting insights about the complete circulation of gas from the galactic disk into the halo and back," says Savage. |
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