2005/03/15 | 有棒星系[Barred Galaxy]
类别(¤〖天文〗) | 评论(0) | 阅读(28) | 发表于 13:40
Some galaxies have central bars. These structure are not well understood, but are thought to transport material toward the center of the galaxies. The nuclei of barred galaxies are often active.
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