| 单词 | ring galaxy |
| 释义 | ring galaxyring galaxyA very rare type of galaxy that has the form of an elliptical ring either with a massive nucleus, often off-center, or with little or no luminous material visible in its interior. In many cases there is a small satellite galaxy devoid of interstellar gas. The ring configuration is thought to be unstable and it has been suggested that these systems may represent the after-effects of a collision between two galaxies.ring galaxy[′riŋ ‚gal·ik·sē] |
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