旋涡星系
旋涡星系是星系个类型之一，但哈伯拉1936年最初个描述是星云个领域，外加列拉哈伯序列，成为其中个一部分。多数个旋涡星系包含恒星个平坦、旋转盘面，气体搭尘埃，搭中央聚集高浓度恒星，称为核球个核心。
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