Gerard Williger is an adjunct professor at the University of Nice in France and an associate professor in the Department of Physics & Astronomy at the University of Louisville in Louisville, Kentucky.
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Colossal Quasar Clump Too Huge to Exist, in Theory
Astronomers have discovered a clump of 73 quasars spanning four billion light years at its widest point — that’s like 40,000 Milky Way galaxies lined end-to-end.