"Unveiling a Cosmic Megastructure: A Challenge to Universe Theories"

Astronomers have discovered a ring-shaped cosmic megastructure called the Big Ring, with a diameter of about 1.3bn light years, challenging existing theories of the universe. This structure, along with others like the Giant Arc, defies the cosmological principle and raises questions about the standard model of cosmology. The Big Ring was discovered using data from the Sloan Digital Sky Survey and is located near the constellations of Boötes the Herdsman. Its existence suggests the need for a rethinking or expansion of current cosmological theories.