Distant Quasars Provide Crucial Link In Understanding Earliest Supermassive Black Holes

Artist's rendering of the accretion disc in ULAS J1120+0641, a very distant quasar containing a supermassive black hole.
Credit:	ESO/M. Kornmesser

Extreme quasars near the dawn of time are giving astrophysicists clues to the formation of supermassive black holes.

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