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in the universe
Astronomers discover largest known structure in the universe
Astronomers have discovered the largest known structure in the universe – a group of quasars so large it would take 4 billion years to cross it while traveling at speed
Astronomers discover largest known structure in the universe
Astronomers have discovered the largest known structure in the universe – a group of quasars so large it would take 4 billion years to cross it while traveling at speed