Big Ring

The Big Ring is a ring-shaped large-scale structure formed by galaxies and galaxy clusters with a diameter of 1.3 billion light years, located 9.2 billion light years away. It appears near the constellation Boötes. It was discovered in 2024 by Alexia Lopez, a PhD student at the University of Central Lancashire. In 2021, she discovered the Giant Arc, a similar structure located in the same region.

This article is about the configuration of galaxy clusters in the distant universe. For other uses, see big ring (disambiguation).

Lopez has no theoretical model to account for the existence of the gigantic galactic formations, stating “Neither of these two ultra-large structures is easy to explain in our current understanding of the universe."

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