All of the following observations are real. Which one does not support the theory that active galactic nuclei are powered by accretion disks around massive black holes?
A)The most luminous active galactic nuclei have huge redshifts.
B)Spectra of active galactic nuclei show that clouds of gas are orbiting a central object at very high speed.
C)X- ray emission from active galactic nuclei can vary significantly in times as short as a few days.
D)The total luminosity of an active galactic nucleus can be as high as about 10 billion times that of the Sun.

Question

Quizplus · Accepted Answer

The redshift observed in the most luminous active galactic nuclei could be interpreted as evidence for the expansion of the universe rather than for accretion disks around black holes.

All of the Following Observations Are Real