Which type of active galaxy can be seen at the greatest distance?
A)Seyfert galaxies
B)radio galaxies
C)quasars
D)BL Lac objects

Question

Quizplus · Accepted Answer

Quasars are the most luminous type of active galaxies and their high luminosity makes them visible at the greatest distances. They are thought to be powered by supermassive black holes at the centers of galaxies, which accrete large amounts of matter and emit vast amounts of energy in the form of radiation. Quasars have been observed at distances up to 13 billion light-years away, corresponding to a time when the universe was only about 800 million years old.

Which Type of Active Galaxy Can Be Seen at the Greatest