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In 2021, British PhD student Alexia Lopez was analysing the light coming from distant quasars when she made a startling discovery.
She detected a giant, almost symmetrical arc of galaxies 9.3 billion light years away in the constellation of Boötes the Herdsman. Spanning a massive 3.3 billion light years across, the structure is a whopping 1/15th the radius of the observable Universe. If we could see it from Earth, it would be the size of 35 full moons displayed across the sky.
https://www.bbc.com/future/article/20230302-the-giant-arcs-that-may-dwarf-everything-in-the-cosmos
She detected a giant, almost symmetrical arc of galaxies 9.3 billion light years away in the constellation of Boötes the Herdsman. Spanning a massive 3.3 billion light years across, the structure is a whopping 1/15th the radius of the observable Universe. If we could see it from Earth, it would be the size of 35 full moons displayed across the sky.
https://www.bbc.com/future/article/20230302-the-giant-arcs-that-may-dwarf-everything-in-the-cosmos