Astronomers have discovered a colossal structure 9.2 billion light-years from Earth, dubbed the “Big Ring,” a 1.3-billion-light-year-across almost perfect ring of galaxies which defies current cosmological theories. Led by Alexia Lopez, the team also unveiled a 3.3 billion light-year giant arc of galaxies in the same region of the sky. Possible explanations include Baryonic Acoustic Oscillations and cosmic strings, challenging the Cosmological Principle. These structures are much larger than the theoretical size limit, pointing to gaps in current cosmological understanding. The discovery raises questions about the nature of the universe and its distribution of matter on an ultra-large scale, presenting a fascinating challenge for cosmologists.
https://cosmosmagazine.com/space/astronomy/giant-structure-space-universe/