When gravity bends light, huge galaxy clusters can act as telescopes, elongating background images of star systems to faint arcs -- a lensing effect like viewing distant street lamps through a glass of wine.
当引力束缚光线， 浩瀚星群化身为望远镜， 将背景星系光芒延展成微弱地弧光-- 引力透镜效应 犹如透过一杯酒遥望 远处街上的灯火阑珊。