Originally, the system comprised a spiral galaxy (right) and an elliptical galaxy (left). The cosmic dance began when the elliptical galaxy pierced through the spiral one. During the interaction, the spiral galaxy experienced significant distortion. The ensuing shock waves transformed its appearance, creating a distinctive ring shape. Furthermore, these shock waves ignited intense star formation, as evidenced by the vibrant blue hue of the ring.
In comparison, the elliptical galaxy (left) remained relatively unscathed by the collision. Its original structure is still discernible, though its core is now encircled by a ring. Contrary to the spiral galaxy, this ring doesn't exhibit any active star formation.
Image credit: NASA, ESA, Hubble, M. Livio
Post a Comment