Light from a distant blue galaxy is lensed due to the curvature of space-time, which is itself caused by the orange galaxy in the foreground. Hence, the image of the blue galaxy that we observe is distorted into a so-called Einstein Ring.
Light from a distant blue galaxy is lensed due to the curvature of space-time, which is itself caused by the orange galaxy in the foreground. Hence, the image of the blue galaxy that we observe is distorted into a so-called Einstein Ring.