Multiple Choice
Today, astronomers find compelling evidence that the energy source of the quasars and active galaxies is
A) antimatter and matter colliding at the center of a galaxy
B) chain reactions of supernova explosions
C) matter falling toward a supermassive black hole at the center of a galaxy
D) the left-over (and stored) energy of the big bang explosion
E) you can't fool me; astronomers have no explanation for what the energy source is for the quasars -- they are completely baffled
Correct Answer:

Verified
Correct Answer:
Verified
Q1: An astronomer who loved reading the Guinness
Q2: After several decades of observation, astronomers have
Q3: Astronomers have established that quasars and active
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Q5: What method would astronomers use to find
Q7: Why do astronomers think that there are
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Q11: What observation in astronomy, made AFTER the