- A massive celestial object, such as a galaxy, whose gravity bends and focuses the light of a more distant object, resulting in a magnified, distorted, or multiple image of the original light source for a distant observer.重力透镜：一群大规模的星体，例如一个银河系，其重力弯曲且集中于较远距离星体的亮光，对远距离观测者产生一个扩大的、扭曲的、重复的原始光源影像