| 单词 | morgan's classification |
| 释义 | Morgan's classificationMorgan's classificationA classification scheme for galaxies, devised by W.W. Morgan, in which galaxies are grouped according to the composite spectra of their component stars and also by their form, i.e. spiral, barred spiral, elliptical, irregular, etc., by their degree of concentration, and by their orientation, which varies from face-on to edge-on. |
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