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Observations confirm that early-universe quasar neighborhoods are densely populated with companion galaxies
Quasars are the most luminous objects in the universe and are powered by material accreting onto supermassive black holes at the centers of galaxies. Studies have shown that early-universe quasars ...
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James Webb telescope measures the starlight around the universe's biggest, oldest black holes for 1st time ever
Quasars — galactic cores containing active supermassive black holes — are among the most ancient things in the universe. As dust and gas accelerate toward the quasar's central black hole ...