The Surprising Observational Fact About Quasars Is That They Appear

The surprising observational fact about quasars is that they appear to:

A) be the largest known structures in the universe, although they produce only modest amounts of energy.
B) be moving rapidly toward us, while emitting large amounts of energy.
C) be associated with ancient supernova explosions.
D) produce the energy output of 1000 galaxies in a volume similar to that of our planetary system.

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