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emission nebula |
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emission nebula [i′mish·ən ′neb·yə·lə] (astronomy) A type of bright diffuse nebula whose luminosity results from the excitation and ionization of its gas atoms by ultraviolet radiation from a nearby O- or B-type star. 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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emission emission characteristics emission control emission electron microscope emission flame photometry emission inventory emission lines emission nebula emission rights emission security emission spectrometer emission spectrum emission standard emission tomography emission-line corona |
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