• Clusters of young, blue stars trace a ring around a center that is rotating with the galaxy.

    成团年轻蓝星围绕一个环形轨迹旋转

    youdao

  • Clusters of young, blue stars trace a ring around a center that is rotating with the galaxy.

    成团年轻蓝星围绕一个环形轨迹旋转

    youdao

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