It’s all an illusion.
ESA/Hubble & NASA, T. Treu
Space has a knack for playing tricks on the eyes.
Take this image for example — does the bright cluster in the center represent one galaxy, two, or perhaps a half dozen?
ESA/Hubble & NASA, T. Treu; markup by Inverse
If you guessed two galaxies, you’re right. Those are the dots in the center of the ring.
But what are the other four bright spots of light circling around them?