| 单词 | dust lane |
| 释义 | dust lanedust laneA belt of gas and dust that completely obscures the optical light from the center of an elliptical or S0 galaxy, forming a prominent dark band. Examples occur in Centaurus A and the Blackeye galaxy. Dust lanes are seen in edge-on spiral systems caused by obscuring matter in the galactic disk, as in the Sombrero galaxy. |
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