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protogalaxy |
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protogalaxy [‚prōd·ō′gal·ik·sē] (astronomy) A clump of matter in an early stage of galaxy formation in which the matter has started to collapse under its own gravity to form a 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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| The so-called protogalaxy resides about 11 billion light-years from Earth. This object appears to fit every definition of a protogalaxy," he and his colleagues will report in the May Astronomical Journal. 1 is a protogalaxy becauseit contains a large amount of ionized hydrogen and comparatively few stars. |
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