| 单词 | ring galaxy |
| 释义 | > as lemmasring galaxy ring galaxy n. Astronomy a galaxy that appears as a ring of relatively young, bright stars with a central region typically containing little luminous material.Such galaxies are rare, and are thought to result from the passage of one galaxy through another. ΚΠ 1963 H. C. Arp in Sci. Amer. (U.K. ed.) Jan. 72/2 There many spiral galaxies in the universe but few ring galaxies. 1974 J. R. Shakeshaft Formation & Dynamics Galaxies 168 The first [piece of evidence] concerns Ring Galaxies, of which about one dozen are known. 2007 S. Van den Bergh in C. Kitchin Galaxies in Turmoil i. 22 (caption) An HST image of Hoag's object, an example of a ring galaxy that may have resulted from a collision between a spiral galaxy and a smaller compact galaxy. < as lemmas |
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