The Impossibly Huge Quasar Group

In 2013, astronomers discovered the Huge Large Quasar Group (LQG), a massive structure of quasars 9 billion light years away, challenging the cosmological principle which suggests no structures larger than 1.5 billion light years should exist. The discovery sparked debate about the universe's structure, with some scientists questioning the methods used and others suggesting the LQG might not violate the principle. The possibility of even larger structures, like the Hercules-Corona Borealis Wall, further complicates the understanding of the universe's large-scale structure.

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