Because of its huge mass, thecluster acts as a cosmic magnifying glass, causing light to bend around it.
由于其巨大的质量，这个星系团相当于一个宇宙放大镜，使光线在它的四周弯曲。
2
Ultraviolet radiation and violent stellar winds have blown out an enormous cavity in the gas and dust enveloping thecluster.
紫外线和猛烈的星际风，在气体以及包裹星群的灰尘上吹出了一个硕大的洞。
3
If the center of NGC 4258 were a star cluster, the stars would be so closely spaced that collisions between individual stars would have long ago torn thecluster apart.
如果 NGC 4258 的中心是一个星团，恒星之间的距离会非常近，以至于在很久以前单个恒星之间的碰撞就会把星团撕裂。