What is the name of the luminous region of space around the center of some large galaxies?
A a northern light
B a neutron star
C a pulsar
D a quasar
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The correct answer is D: a quasar.
A quasar (short for “quasi-stellar object”) is an extremely luminous and active galactic nucleus that emits large amounts of energy, often outshining the entire galaxy that contains it. Quasars are powered by supermassive black holes at the centers of galaxies, where matter is being accreted, resulting in the intense brightness we observe.