| 单词 | galactic wind |
| 释义 | galactic windgalactic windA substantial outflow of hot gas from a galaxy that has recently suffered a high burst of star formation or a merger. The gas has a velocity of a few hundred kilometers per second and is usually hot enough to emit in X-rays. The occurrence of galactic winds has implications for the energetics, chemical enrichment, and evolution of galaxies and their environment. |
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