Quasars all appear to be:
A) extremely massive objects in the Milky Way Galaxy, their spectra showing very high gravitational redshift.
B) moving away from us at very high speeds, up to about 90% of the speed of light.
C) moving across our line of sight at very high speeds, as seen in time-lapse photographs.
D) moving toward us at high speeds, as high as 90% of the speed of light.
Correct Answer:
Verified
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