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thick disk |
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thick disk [¦thik ′disk]
(astronomy) A component of the galactic stellar population that extends over distances up to 1500 parsecs from the galactic plane, and is approximately 9-10 × 109years old, intermediate in age between the thin disk and the halo. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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