碰撞星系

只有当哈勃望远镜的能力达到能拍摄碰撞的星系时，我们能揭开这些超级星星形成的主要原因。

A major aspect of this excess star formation could be properly revealed only when Hubble turned its imaging capabilities toward colliding galaxies .

在图中央偏左处的明亮扭曲天体实际上是两个相互碰撞的矮星系。

The bright , distorted object at middle , left , is actually two colliding dwarf galaxies .

碰撞也会改变星系的外形，特别是当两螺旋星系融合后可能会产生单一的椭圆星系。

Collisions also can transform the shape of galaxies involved ; specifically , the merger of two spiral galaxies may produce a single elliptical galaxy .

碰撞的两个星系产生了强烈的密度波，把物质推到外侧的环形上，并激发了恒星的形成。

The colliding galaxies would have created a powerful density wave that would have swept out the material into an expanding ring , stimulating star formation .