This debris was recaptured a few hundred years after each collision. 在每一次碰撞之后几百年,这些碎屑又被重新俘虏。
The whole thing looks like a ring to us on Earth because we're seeing the collision head-on, rather than from the side. 对于地球上的我们,整个暗物质看起来象一个巨环,因为这次碰撞是我们从前面,而不是从侧面观察到的。